A couple of comments to make though, if you don't mind. =)
Firstly, I rekkon his trouser-legs are a bit straight along the edges... they look a bit solid. Think they should probably be more creasy, specially if he's been running about and stuffs. =) creasy round the knees and hips.
Secondly, I think his shoes are a bit rounded and simplified. they don't look much like the chunky trainers I'd imagine a basketball player like this guy to wear. Not being rude, but they sorta remind me of dennis the menace feet - you know, really rounded and exaggerated? I just don't think they really fit with the rest of the character.... but that's just my humble opinion, ya know...

Lastly, I think he looks a little short (overall) to be a basketball player. Unless he's REALLY REALLY REALLY good at jumping... XD