With these bad players you have to see what they contribute on the bench. At least Cook was cheering and in uniform. Scalabrine and Morrison look like 2 guys in normal street clothes that won really close bench seats from a radio contest.
It's true. I rather see McGrady than Yao as a Rocket...but I also realize that making fun of a player over what is/could be a mental weakness and injuries doesn't make him the worst.
My theory is any player without a wikipedia page that has played in a game is the absolute worst or just the biggest nobody, I think wikipedia has an article for every pplayer