The Boston Celtics traded a 29-year-old MVP-caliber player for a 36-year-old who played 37 games last season. It made no basketball sense. But when you follow the money — and the shareholders — it makes perfect sense.

Stephon Castle is quietly having one of the most impressive sophomore campaigns in recent NBA history. Nearly 17 points, 7.4 assists, lockdown perimeter defense — and in the playoffs, he's gone nuclear. It's time to stop talking about him as Wemby's teammate and start talking about him as exactly what he is: one of the most exciting, most complete young players in the NBA.