1. Welcome! Please take a few seconds to create your free account to post threads, make some friends, remove a few ads while surfing and much more. ClutchFans has been bringing fans together to talk Houston Sports since 1996. Join us!

Trying to rank and rate NBA teams

Discussion in 'Houston Rockets: Game Action & Roster Moves' started by Unstable, Aug 8, 2013.

  1. Panda23

    Panda23 Member

    Joined:
    Jul 2, 2012
    Messages:
    8,566
    Likes Received:
    619
    we've had like 3 preseason games and you're already condemning us LOL
     
  2. Unstable

    Unstable Member

    Joined:
    Oct 29, 2012
    Messages:
    294
    Likes Received:
    22
    okay managed to crunch some figures up till end of Jan 13 (for last season) - here are the Rank Values of the 30 teams (please note this is works in progress and experimental but comments and feedback are welcomed).

    While working through this realized that RV swings quite drastically as the games progressed - in the end I might have to report an RV range of values or an average with a +/- SD.

    Teams not arranged in ranking order but by alphabetical code

    Team - RV
    ATL - 1243
    BKN - 1237
    BOS - 1299
    CHA - 1134
    CHI - 1395
    CLE - 1301
    DAL - 1288
    DEN - 1432
    DET - 1200
    GSW - 1407
    HOU - 1314
    IND - 1296
    LAC - 1296
    LAL - 1288
    MEM - 1277
    MIA - 1331
    MIL - 1308
    MIN - 1091
    NOH - 1225
    NYK - 1293
    OKC - 1368
    ORL - 1095
    PHI - 1278
    PHX - 1323
    POR -1312
    SAC - 1200
    SAS - 1482
    TOR - 1184
    UTA - 1292
    WAS - 1226
     
  3. Unstable

    Unstable Member

    Joined:
    Oct 29, 2012
    Messages:
    294
    Likes Received:
    22
    Not a dumb question at all Voice of Aus, I just managed to compute the figures for last season (starting all teams at 1271 and see what's the score like at the end of the season - yeah, it's a long and tedious process and I could ony do this part time (have a day job to take care of).... but here's how the result went - surprising to me but I'd give my interpretation of it.

    Note: (I could only count 81 games for BOS and IND but I think by and large the Rank Values are a good reflection of where teams stood against each other for last season)

    (1) MIA 1392 ± 89 (E1)
    (2) SAS 1379 ± 58 (W1)
    (3) OKC 1378 ± 59 (W2)
    (4) DEN 1356 ± 89 (W3)
    (5) LAC 1355 ± 77 (W4)
    (6) MEM 1351 ± 70 (W5)
    (7) NYK 1345 ± 74 (E2)
    (8) IND 1314 ± 55 (E3)
    (9) GSW 1308 ± 67 (W6)
    (10) HOU 1301 ± 64 (W7)
    (11) DAL 1298 ± 48 (W8)
    (12) CHI 1293 ± 52 (E4)
    (13) LAL 1289 ± 61 (W9)
    (14) BKN 1285 ± 59 (E5)
    (15) UTA 1277 ± 53 (W10)
    (16) ATL 1275 ± 54 (E6)
    (16) BOS 1275 ± 59 (E6)
    (18) MIL 1261 ± 53 (E8)
    (19) TOR 1243 ± 69 (E9)
    (20) POR 1237 ± 66 (W11)
    (21) NOH 1232 ± 67 (W12)
    (22) SAC 1227 ± 52 (W13)
    (23) PHI 1223 ± 72 (E10)
    (24) MIN 1222 ± 62 (W14)
    (24) WAS 1222 ± 78 (E11)
    (26) DET 1217 ± 81 (E12)
    (27) PHX 1205 ± 59 (W15)
    (28) CLE 1196 ± 76 (E13)
    (29) ORL 1168 ± 80 (E14)
    (30) CHA 1158 ± 72 (E15)

    So what can we glean from these? (my interpretation):
    (1) NBA teams are not that far apart in terms of the playing levels of the teams - the system I was using is a closed ranking system with a base RV of 82 between levels - I assumed there were 30 different levels ranging from 82 (lowest RV score) up till 2460 (highest possible RV score). Starting all teams at 1271 (the median point), we ended up with a range of averages that went from 1158 to 1392 or about RV difference of 234 (or 2.8 levels - to make it simpler we have 3 levels of teams roughly.) This may be a result of the way NBA operates - allowing the weaker teams to draw on better new talents by giving them first pickings. For those interested, based on this set of scores the bottom level teams would be teams scoring RV 1240 and below and the top level teams (8 of them) are teams scoring RV 1310 and above. Our Rockets were high-mid-level team (just beneath GSW).

    (2) Whilst going through this exercise, I noticed the swings of the RV values game to game - so I don't think it's meaningful to update the interim RV values (as they obviously goes up when the team wins and come down again when the team loses). I think it would be more meaningful to compare these Season to Season. If we compare our Rockets RV for this season versus last - it would tell us if we had actually improved our team.

    (3) The other interesting information is estimating the difference in levels between the East and West conferences - we all know the Western conference is tougher than the East - but no one could put their finger on how tough it actually was..... well if we averaged the averages of E vs W teams - we get a RVW of 1294 versus RVE of 1258 (or about only 0.44 level difference) - that doesn't seem to be much - but nearly half a level difference in the NBA that only has 2.8 levels of difference translate to about a 15.7% difference - so I'd stick out my neck and say that the Western Conference was about 16% harder to play as compared to the Eastern Conference for last season. It will be interesting to see if this changes after all the swaps the teams have made for this season.

    In the mean time, let's hope our Rockets will do well this coming season, I am really looking forward to seeing how much improved the team is as compared to last season!

    Go Rockets!
     
  4. Unstable

    Unstable Member

    Joined:
    Oct 29, 2012
    Messages:
    294
    Likes Received:
    22
    Okay finally all teams have completed at least 5 games - here are the RV (averaged) values for the 30 NBA teams - please note of course Rockets rank would have dropped by now since our poor performance for the last 2 games:

    Rank (after first 5 games):
    Pacers - 1361
    Rockets - 1342
    Thunder - 1327
    Warriors - 1324
    76ers - 1318
    Spurs - 1316
    Clippers - 1316
    Mavs - 1308
    Suns - 1300
    Magic - 1296
    Blazers - 1284
    Wolves - 1282
    Pistons - 1278
    Knicks - 1271
    Lakers - 1269
    Heat - 1269
    Cavs - 1266
    Raptors - 1259
    Bulls - 1258
    Nets - 1255
    Bucks - 1249
    Hawks - 1248
    Pelicans - 1241
    Grizzlies - 1239
    Bobcats - 1236
    Kings - 1231
    Wizards - 1221
    Nuggets - 1205
    Jazz - 1184
    Celtics - 1184

    While we started great - it seems the team has hit a snag -our offense does not seem to be flowing... let's hope the rockets recover and pick up their game from hereon....

    go rockets!
     
  5. Reach

    Reach Member

    Joined:
    Apr 20, 2013
    Messages:
    704
    Likes Received:
    35
    Very interesting. I've never seen ELO being applied to NBA rankings but I see few reasons why it wouldn't work. Looking forward to more updates, OP.
     
  6. omgTHEpotential

    Joined:
    Apr 4, 2012
    Messages:
    7,385
    Likes Received:
    5,890
    It's gotta be a joke!!1!1 When you're three best players are all white guys, you can't possibly dream about playoffs!!!!!!1!!!!!!111!!!
     
  7. Unstable

    Unstable Member

    Joined:
    Oct 29, 2012
    Messages:
    294
    Likes Received:
    22
    Okay now that Rockets have completed 10 games I will report the averaged RV values for teams (I don't care about the rest of the teams really but they are in there for a rough comparison purpose - the RV values are averaged up to Games completed on 15 Nov 2013).

    Pacers 1389
    Spurs 1368
    Clippers 1326
    Thunder 1318
    Blazers 1318
    Warriors 1316
    Suns 1302
    Rockets 1301
    Mavs 1301
    Heat 1296
    Lakers 1288
    Magic 1280
    Knicks 1278
    76ers 1277
    Bulls 1273
    Wolves 1269
    Hawks 1262
    Pistons 1256
    Pelicans 1248
    Grizzlies 1247
    Raptors 1244
    Nets 1240
    Celtics 1238
    Wizards 1238
    Bobcats 1233
    Nuggets 1231
    Cavs 1228
    Bucks 1223
    Kings 1211
    Jazz 1145

    I don't think we are too shabby still in the top 8 teams at the start of season.... now that TT is no longer in the pipeline - maybe the team will settle down to more regular playing behavior and hopefully consolidate our position as one of the potential challengers for the crown. Go Rockets!
     
  8. Unstable

    Unstable Member

    Joined:
    Oct 29, 2012
    Messages:
    294
    Likes Received:
    22
    An update since we have data of all teams completing 10 games - here are the averaged RV values of teams after 10 Games:
    IND 1387
    SAS 1368
    LAC 1333
    POR 1322
    GSW 1319
    OKC 1314
    MIA 1305
    DAL 1303
    CHI 1303
    HOU 1301
    PHX 1292
    LAL 1288
    PHI 1277
    ORL 1275
    MIN 1269
    ATL 1268
    NYK 1264
    MEM 1252
    DET 1249
    NOP 1245
    TOR 1244
    BOS 1238
    WAS 1237
    CHA 1235
    DEN 1235
    BKN 1233
    CLE 1228
    MIL 1207
    SAc 1206
    UTA 1145

    Sad that Rockets is only 10th (but we are still 7th in the West) - hopefully we do better.
    Go Rockets!
     
  9. Unstable

    Unstable Member

    Joined:
    Oct 29, 2012
    Messages:
    294
    Likes Received:
    22
    Update - after Rockets completed their 15th Game (a comparison of averaged RV of the other teams - please note not all teams have finished 15 games yet and some were over).

    Averaged RV values of teams for games up to 25 Nov 2013:
    SAS - 1393
    IND - 1376
    POR - 1349
    MIA - 1338
    LAC - 1334
    OKC - 1323
    GSW - 1320
    DAL - 1317
    HOU - 1315
    CHI - 1294
    LAL - 1289
    ATL - 1279
    MEM - 1276
    PHX - 1273
    DEN - 1263
    TOR - 1261
    ORL - 1258
    MIN - 1256
    NYK - 1248
    NOP - 1246
    WAS - 1245
    DET - 1241
    CHA - 1233
    PHI - 1230
    BOS - 1227
    BKN - 1211
    SAC - 1211
    CLE - 1210
    MIL - 1186
    UTA - 1133

    Okay, Rockets are still hanging in the top 8 teams so far - Go Rockets!!!
     
  10. Unstable

    Unstable Member

    Joined:
    Oct 29, 2012
    Messages:
    294
    Likes Received:
    22
    Update after Rockets have completed at least 20 games (the rest may or may not have caught up to the number of games) - but here's how we stand against them in terms of RV scores:

    SAS - 1394
    IND - 1380
    POR - 1368
    MIA - 1356
    OKC - 1350
    HOU - 1330
    LAC 1328
    GSW - 1318
    DAL - 1306
    DEN - 1301
    LAL - 1293
    CHI - 1284
    MEM - 1278
    PHX - 1278
    WAS - 1266
    ATL - 1265
    TOR - 1255
    MIN - 1248
    ORL - 1243
    NOP - 1238
    DET - 1237
    BOS - 1231
    NYK - 1230
    CHA - 1224
    SAC - 1213
    CLE - 1205
    BKN - 1204
    PHI - 1196
    MIL - 1172
    UTA - 1150

    Cool that we have improve to 6th - let's see if Rockets can hold up their performance and be consistent throughout the season. Go Rockets!!!
     
  11. just a word

    just a word Member

    Joined:
    Nov 14, 2012
    Messages:
    951
    Likes Received:
    39
    Interesting work, and its amusing to me that the suns are so high considering the tanking. But then, dragic and bledsoe.

    A thought, I wonder if in the end you might be able to retroactively extract home court advantage #'s from utah and denvers numbers, comparing home/away splits against those of neutral site locations.
     
  12. Unstable

    Unstable Member

    Joined:
    Oct 29, 2012
    Messages:
    294
    Likes Received:
    22
    Interesting idea just a word - my problem would be trying to do this - will have to go back and re-calculate the split and may have to treat each team with 2 sets of RVs (Home and Away) - maybe during the lull of season end may go back and take a look at it. At the moment, I am late just crunching current figures (still trying to catch up at Players' RVs) - will be posting Rockets RV after 25 Games in the next post.
     
  13. Unstable

    Unstable Member

    Joined:
    Oct 29, 2012
    Messages:
    294
    Likes Received:
    22
    Update - after Rocket's 25th game, the RV standings are:

    SAS - 1390
    IND - 1385
    POR - 1379
    OKC - 1374
    MIA - 1355
    HOU - 1332
    LAC - 1316
    GSW - 1311
    DAL - 1303
    DEN - 1302
    PHX - 1288
    LAL - 1283
    ATL - 1267
    WAS - 1264
    CHI - 1263
    MEM - 1263
    TOR - 1256
    MIN - 1251
    DET - 1246
    BOS - 1239
    NOP - 1237
    NYK - 1227
    ORL - 1225
    CLE - 1222
    SAC - 1221
    CHA - 1219
    BKN - 1214
    UTA - 1172
    PHI - 1169
    MIL - 1167
     
  14. Unstable

    Unstable Member

    Joined:
    Oct 29, 2012
    Messages:
    294
    Likes Received:
    22
    Update - after Rocket's 30th game - here are current RV standings:

    OKC - 1390
    SAS - 1390
    IND - 1382
    POR - 1378
    MIA - 1365
    HOU - 1327
    LAC - 1322
    GSW - 1312
    PHX - 1300
    DAL - 1299
    DEN - 1296
    ATl - 1275
    LAL - 1274
    WAS - 1270
    DET - 1261
    TOR - 1261
    MIN - 1255
    MEM - 1248
    BOS - 1243
    CHI -1242
    NOP - 1229
    CHA - 1224
    CLE - 1219
    SAC - 1217
    ORl - 1215
    NYK - 1214
    BKN - 1211
    UTA - 1192
    MIL - 1172
    PHI - 1158
     
  15. Unstable

    Unstable Member

    Joined:
    Oct 29, 2012
    Messages:
    294
    Likes Received:
    22
    Update - after Rocket's 35th Game the RV scores of teams are as follows (please note not all teams have completed 35 games yet): I think we are still holding out fine - if our players can improve their plays - we are very close towards contending (if we can keep our core players intact, next season looks really promising).

    OKC - 1392
    SAS - 1388
    IND - 1382
    MIA - 1367 POR - 1367
    GSW - 1327 HOU - 1327
    LAC - 1326
    PHX - 1307
    DAL - 1304
    TOR - 1278
    ATL - 1276
    WAS - 1275
    DEN - 1274
    MIN - 1265
    LAL - 1257
    DET - 1255
    MEM - 1245
    CHI - 1241
    BOS - 1238
    NOP - 1236
    CHA - 1224
    SAC - 1217
    CLE - 1215
    ORL - 1214
    BKN - 1210
    NYK - 1205
    UTA - 1204
    MIL - 1173
    PHI - 1158
     
  16. Unstable

    Unstable Member

    Joined:
    Oct 29, 2012
    Messages:
    294
    Likes Received:
    22
    Update after Rockets 40th game (i.e. up till Jan 15 2014) - the RV rankings of teams are:

    SAS - 1387
    IND - 1382
    OKC - 1377
    MIA - 1369
    POR - 1353
    GSW - 1337
    LAC - 1329
    HOU - 1325
    PHX - 1303
    DAL - 1300
    TOR - 1291
    WAS - 1281
    ATL - 1274
    DEN - 1273
    MIN - 1269
    MEM - 1258
    CHI - 1255
    DET - 1243
    LAL - 1233
    NOP - 1229
    BKN - 1227
    SAC - 1224
    NYK - 1222
    CHA - 1220
    BOS - 1218
    CLE - 1217
    UTA - 1213
    ORL - 1202
    MIL - 1168
    PHI - 1165

    About halfway through the season, rockets is hovering around as a top 8 team in the whole league - not too shabby. However, if we want to contend, we will still need SAS, IND, OKC and MIA which are currentlly the top 4 teams. If we view that a differential of 82 is one rank different, rockets need to be playing one rank higher than what we are doing now. So - it confirms what some folks have been asking for - maybe just one more additional piece could push us there or the other alternative is simply let the team grow (our players are young). So far, it just looks like we are just outside the contenders bracket, but we are close....... Go Rockets!
     
  17. Unstable

    Unstable Member

    Joined:
    Oct 29, 2012
    Messages:
    294
    Likes Received:
    22
    Update - after Rocket's 45th game, the RV standing of teams are:

    IND - 1386
    SAS - 1383
    OKC - 1379
    MIA - 1359
    POR - 1351
    LAC - 1333
    GSW - 1332
    HOU - 1324
    PHX - 1301
    DAL - 1299
    TOR - 1289
    WAS - 1286
    ATL - 1275
    MIN - 1271
    DEN - 1269
    MEM - 1267
    CHI - 1256
    BKN - 1242
    DET - 1240
    SAC - 1231
    LAL - 1228
    CHA - 1227
    NOP - 1225
    NYK - 1220
    CLE - 1219
    UTA - 1216
    BOS - 1204
    ORL - 1196
    PHI - 1166
    MIL - 1165

    We are still around 8th in the league... sad that we lost today, hopefully we can get one back tomorrow against the grizzlies..... Go Rockets!
     
  18. Unstable

    Unstable Member

    Joined:
    Oct 29, 2012
    Messages:
    294
    Likes Received:
    22
    Update - after Rocket's 50th game, the standings by RV is:

    OKC - 1388
    IND - 1376
    SAS - 1371
    MIA - 1359
    POR - 1348
    LAC - 1336
    GSW - 1331
    HOU - 1327
    PHX - 1307
    DAL - 1297
    TOR - 1294
    WAS - 1293
    MEM - 1290
    ATL - 1278
    MIN - 1277
    DEN - 1270
    CHI - 1256
    BKN - 1250
    CHA - 1233
    DET - 1233
    NOP - 1232
    SAC - 1229
    UTA - 1222
    NYK - 1221
    LAL - 1217
    CLE - 1211
    BOS - 1194
    ORL - 1186
    PHI - 1162
    MIL - 1157

    Still holding out at 8th but we are closing in on GSW (seem to be on a decline).
     
    1 person likes this.
  19. heypartner

    heypartner Contributing Member

    Joined:
    Oct 27, 1999
    Messages:
    62,574
    Likes Received:
    56,311
    The easiest way to rank teams throughout the season is to use Road Wins vs Home Losses. It is the only ranking that is so simple, yet mathematically guaranteed to equal final rankings at the end of the season. It is the only indicator of rank that converges on real rankings at the end of the season.

    Why use anything else? This stat has us 5th - 7th in the West (GSW and MEM are tied with us) and show the Clippers are under ranked and Portland over ranked. LAC are 2nd in the West.

    And I can check this in seconds by looking at the standings every day. So simple
     
  20. Unstable

    Unstable Member

    Joined:
    Oct 29, 2012
    Messages:
    294
    Likes Received:
    22
    I don't dispute what you say heypartner, by the way, the rankings tally that way because that's how the league is using to rank the teams!

    From the way I look it, using the scoring matrix allows some further details which doesn't surface from the pure results ranking (which is what W/L) is about. One of those things is to gauge if the team is underperforming/overperforming.

    Another thing that using a scoring method help is to gauge what the relative difference in standards is between East and West - it helps to give a value of how different the standards are rather than the simple thing we know now that the Western conference is tougher than the Eastern conference.

    I am also trying to ascertain if it can be useful for teams to gauge how far off they are from making to certain spots (i.e. help them gauge if they should/should not acquire a player - and after acquiring said player, did it really helped them?)
     

Share This Page

  • About ClutchFans

    Since 1996, ClutchFans has been loud and proud covering the Houston Rockets, helping set an industry standard for team fan sites. The forums have been a home for Houston sports fans as well as basketball fanatics around the globe.

  • Support ClutchFans!

    If you find that ClutchFans is a valuable resource for you, please consider becoming a Supporting Member. Supporting Members can upload photos and attachments directly to their posts, customize their user title and more. Gold Supporters see zero ads!


    Upgrade Now