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The junior guard's grades forced the school to suspend Cobb for the 2012-13 season.
The Chicago Tribune is reporting that substandard grades were at the center of Cobb's year-long suspension, and the junior, who will have two years of eligibility remaining at Northwestern, is beginning to work on improving his marks.
Cobb was also suffering from a hip injury that was limiting the distributor in the lead up to the 2012-13 season. Both circumstances had Northwestern coach Bill Carmody worried about Cobb. The junior could return to practice with the team in mid-December, according to the report.
"He's a nice kid and a lot of people on campus want him to succeed," Carmody told the Tribune. "I hope he gets it."
As a sophomore in the 2011-12 season, Cobb averaged just more than 20 minutes per game, contributing 7.1 points and 1 assist per game, on average, to a Northwestern team that finished just outside of the NCAA tournament.