Michigan State, on the other hand, played more like Benedict Arnold.
GW forced 22 Michigan State turnovers, and outscored the Spartans 50-28 in the paint while cruising to the 96-83 victory.
G.W. was led by Forward Pops Mensah-Bonsu, who poured in 23 points. Guards T.J. Thompson and Carl Elliott added 18 and 17 points, respectively, for the Colonials (4-1), who have been the winners of four-straight following a season-opening loss to top-ranked Wake Forest.
Maurice Ager scored 22 to lead the Spartans. Chris Hill chipped in with 15 points, and Shannon Brown and Alan Anderson added 12 and 10 points, respectively. Paul Davis, playing only 19 minutes due to foul trouble (he finished with 4), was held to 7 points and 4 rebounds.
Nine of the ten Spartans who saw action committed at least one turnover. MSU was also out-rebounded 36-to-29, including 15-to-12 on the offensive end.
"I'm extremely disappointed in the way we handled things mentally, almost as much as physically, time after time," Michigan State Head Coach Tom Izzo said after the game. "We just did not play very intelligently. I thought they played harder and wanted it more. I'm embarrassed to say that."
The first half was highlighted by 11 lead changes and seven ties. The Colonials forced 13 turnovers in the first half and were also helped by a 10-0 run that allowed them to take an 11-point lead at the break.
In the second half, Michigan State used a 3-pointer by Chris Hill and a layup by Paul Davis to cut GW's lead to six; however the Colonials answered back minutes later when J.R. Pinnock drained a 3-pointer to spark an 8-0 run that put GW up by 14.
MSU later closed to 59-50 before Pinnock made a three-point play and Elliott sank a 3-pointer in a 7-2 spree that gave the Colonials a 67-52 lead with 12:45 left. The Spartans wouldn't get any closer than six points for the remainder of the game.
George Washington will face No. 12 Maryland on Sunday in the championship game of the BB&T Classic. Michigan State (3-2) will play in the consolation game versus George Mason, who lost 78-54 to Maryland in Saturday's earlier matchup.