IT4 has a chance, but I'm going to give some love to Muggsy. He's listed at 5'3", 136, and averaged over 7 assists per game for his career, with a career assist-to-turnover ratio near 5:1. He wasn't really a scorer, but he had a 13+ year career as a floor general on some good Charlotte teams in the 90s. Top-20 all time in assists, and 94th all-time in offensive rating for a career. And he had nearly as many steals for his career as turnovers, which is pretty amazing given how much the ball was in his hands. Top-50 all time steal rate.
If IT can keep it up for another 7-10 years, I'll give him the nod. But right now, it's Muggsy.