Last week there was a pre-season NBA game in Montréal (Raptors vs. Knicks), I had the opportunity to shoot the game... it was a first experience in major Sports (did CFL but that doesn't count hahahahahaha)
I'd say you did pretty well. Exposure and colors look good. Some of the action is good, some of it is less good (too far off-peak). Nice variety. On the whole, I found myself liking the tighter shots more than the looser ones, but this is confounded a bit by how close to peak the action was. For a first crack at NBA, I'd say you should feel good about what you got.
I was a bit caught of guard shooting Basketball... I remember playing it in high school about 20 years ago (my god I'm getting old) but never saw it professionally. So I had no idea what to shoot Sadly Basketball isn’t something people really care about in Québec so we’re not used to it.