Georgetown's Otto Porter Jr., left, greets a teammate before an NCAA college basketball game against Liberty, Wednesday, Nov. 14, 2012, in Washington. Porter sat the game out because of "symptoms indicative of a mild concussion,” head coach John Thompson III said in a statement. (AP Photo/Alex Brandon)

Liberty guard John Caleb Sanders, center, is trapped by Georgetown guard Markel Starks (5) and forward Greg Whittington during the first half of an NCAA college basketball game, Wednesday, Nov. 14, 2012, in Washington. (AP Photo/Alex Brandon)

Liberty guard Casey Roberts, left, drives to the basket as he is covered by Georgetown forward Stephen Domingo (31) during the first half of an NCAA college basketball game, Wednesday, Nov. 14, 2012, in Washington. (AP Photo/Alex Brandon)

Georgetown forward Greg Whittington, left, dribbles the ball as he pursued by Liberty forward JR Coronado during the second half of an NCAA college basketball game on Wednesday, Nov. 14, 2012, in Washington. Georgetown won 68-59. (AP Photo/Alex Brandon)

Liberty head coach Dale Layer talks with his team, including guards Jarred Jourdan (0) and Casey Roberts (3), during the second half of an NCAA college basketball game against Georgetown, Wednesday, Nov. 14, 2012, in Washington. Georgetown won 68-59. (AP Photo/Alex Brandon)

Liberty forward Andrew Smith, left, scrambles for the loose ball with Georgetown forward Mikael Hopkins during the second half of an NCAA college basketball game on Wednesday, Nov. 14, 2012, in Washington. Georgetown won 68-59. (AP Photo/Alex Brandon)

Liberty guard Larry Taylor, left, guards Georgetown guard D'Vauntes Smith-Rivera during the second half of an NCAA college basketball game on Wednesday, Nov. 14, 2012, in Washington. Georgetown won 68-59. (AP Photo/Alex Brandon)

Georgetown guard Jabril Trawick, left, and Liberty guard John Caleb Sanders go for the loose ball during the second half of an NCAA college basketball game onWednesday, Nov. 14, 2012, in Washington. Georgetown won 68-59. (AP Photo/Alex Brandon)

Liberty forward JR Coronado, back, fouls Georgetown forward Mikael Hopkins, top, during the second half of an NCAA college basketball game on Wednesday, Nov. 14, 2012, in Washington. Georgetown won 68-59. (AP Photo/Alex Brandon)

Georgetown Hoyas head coach John Thompson III, right, talks with an official during the first half of an NCAA college basketball game against Liberty, Wednesday, Nov. 14, 2012, in Washington. Georgetown won 68-59. (AP Photo/Alex Brandon)