Because what good would it have done!
I really underestimated TMac before I watched that series he played against us last year. Now he's one of my favorite non-Mavs in the NBA. Actually, I could probably count on one hand the number of non-Mavs (or non-former-Mavs) in the league that I like. TMac and Iverson head the list. Sheed makes it, too. And I guess that's about it.