It should be Hayes, but most likely it will be Jordan Hill, unless in the games before Yao returns he becomes either a defensive or offensive juggernaut.
None right now... With Yao's limited role their really isn't any reason to put any of them on the pine currently. But after last night I think Hayes has catapulted himself ahead of all other backup centers. I would like to see him start at center until yao comes back. He is clearly our best defensive center out of the 3. As for Hill I would like to see him get a shot as back up for Scola. ANd then see both Miller and Hill play Center under different situations.
Hill is a defensive liability, he's young and has a lot to learn. He has a ton of talent but still needs to work on his defense. Until he learns how to truly protect the paint and staying in front of his man, he should be behind Chuck and Miller. This team need defense and Chuck is better at that than anyone. You won't get a lot of highlight blocks or dunks but you'll get a player that makes this team tough. Miller as well has been around the block a few( ahh many times), and is not new to this system. His experience and leadership abilities should be utilized. I haven't given up on this season and until then we need defense, experience and leadership. So I'd have Chuck at the start and end of games. Miller off the bench and Hill off the pine. Hill has lots of positives, but we want to win now. No more learning curves.
Hopefully Yao. I have grown tired of our big man who can't stay healthy. Time to cut the ties with this guy!!!!