It might strain your memory to recall such a time, but for the first 21 games of the season, Mitchell Robinson was one of the best defensive centers in the NBA. No joke. He was averaging 10.3 rebounds per game, easily the highest mark of his career. Take into account the fact that on top of that, he was averaging nearly 1.5 steals and 1.5 blocks per game, and Robinson was quickly establishing himself as one of the premier bigs across the league. Through those 21 games, he averaged 5.3 (!!!) offensive rebounds per game, which led the league by a huge margin.