 Complete the following phrase:  Yi was named the NBA Rookie of the Month for December 2007 after averaging 12.1 points and 6.6 rebounds per game that month, while scoring a career-high 29 points on 14-of-17 shooting in a win over the Charlotte Bobcats on December 22. On 30 January 2008, he was selected for the rookie team in the Rookie Challenge at the 