Last week, we discussed how the race for Rookie of the Year is wide open because of injuries to several of the top picks. No. 3 Otto Porter, No. 6 Nerlens Noel and No. 10 C.J. McCollum still haven’t taken the court this season. But a couple of first-round picks – both point guards – made their NBA debuts this week. On Monday, it was Dallas Mavericks guard Shane Larkin, who suffered a broken ankle in the last practice before summer league.