I went for 101 with my non-maxed out created player in a game earlier on All Star difficulty, hitting 15/21 from the arc. He also had 12 boards and 13 assists. I also just went off for 77/11/19 with him, hitting 7/10 from the three, and this was on Superstar difficulty. Not too long ago landed a quadruple double - 42pts/12/rbnds/11stls/13assts, also on Superstar. Those have been my best performances. And just so you know, his overall is only about 95 or so, and that's because it's gone up in my dynasty mode.
If we throw him out the window, I had a 20/20 game with one of Quincy Dunn (drafted center), and also dropped 42 in with Rob Parks (drafted player).
However, I like to think my best accomplishment is I'm sitting pretty at 62-0 in my season, well on my way to a perfect season.