I gotta go with
Artis in his rookie year, (1971-1972) ... hard to believe, but he was both the
ABA Rookie of the Year and the
ABA MVP that year, and check out the stat line, (this is a
rookie, mind you):
.598 FG%, 23.8 PPG, 17.8 RPG, 2.7 APG, 5.0 BPG, 43.6 MPG ... not bad for a first-year guy.

With
KJ, I think I'll go with 1988-1989, when he was the NBA MIP, and started and played 81 out of 82 games:
.499 FG%, 20.4 PPG, 4.2 RPG, 12.2 APG, .882 FT%.
Thoughts?