WEST LAFAYETTE, Ind. – Mike Tisdale scored 18 points and Illinois defeated No. 9 Purdue 71-67 in overtime Tuesday night in the Big Ten opener for both teams.

Mike Davis scored 12 points, Trent Meacham added 11 and Demetri McCamey had 10 for the Fighting Illini (13-1), who won their seventh straight.

E’Twaun Moore scored 17 points and JaJuan Johnson had 16 points and 15 rebounds for Purdue (11-3), which had won its previous six games. Robbie Hummel, Purdue’s top scorer, was held to seven points and took just seven shots. He had 11 rebounds.

Purdue was 15-of-27 from the free throw line and shot 38 percent from the field in the game.

Illinois has gotten the best of a budding rivalry lately. The Fighting Illini upset Purdue in the second round of the Big Ten tournament last season when the Boilermakers were seeded second and Illinois 10th.

In overtime, Purdue jumped out quickly with baskets by Hummel and Lewis Jackson, but Illinois scored the next eight points and never trailed again. The Fighting Illini made seven of eight free throws in the final minute to keep the Boilermakers at bay.

Purdue had the ball, trailing 67-64 in the final minute of overtime. Moore drove to the basket but had his shot blocked and Illinois rebounded. McCamey made two free throws with 12.7 seconds left to put Illinois in control for good.

With just under four minutes left in regulation and Illinois leading 50-49, McCamey drove to the basket, but Johnson slammed his shot against the backboard. Purdue quickly advanced the ball, and Hummel drained a long jumper to give Purdue its first lead of the second half.

Tisdale committed his fifth foul while battling Johnson for a rebound with 2:05 to go. Johnson made both free throws to give Purdue a 55-52 lead. Meacham’s layup made it 55-54.

Purdue’s Keaton Grant missed a bank shot, and Illinois took possession in the final minute with a chance to take the lead. Illinois’ Calvin Brock put up a quick mid-range jumper, and Johnson rebounded for Purdue.

Moore drove to the hoop and put up an awkward, off-balance shot that missed badly, and Illinois rebounded to earn a chance at the win.

Meacham drove and passed to Davis, who made a bank shot with 6.3 seconds left to give Illinois a 56-55 lead.

Purdue quickly pushed the ball, and Jackson found Johnson for a fadeaway jumper from the left baseline, and Davis fouled him with 1.9 seconds left. Johnson made the first free throw but missed the second to force overtime.