INDIANAPOLIS (AP) -- Kristin Haynie had seven points in an 11-0 overtime run that gave Michigan State (No. 7 ESPN/USA Today, No. 8 AP) a 61-50 victory over Illinois in the Big Ten tournament quarterfinals Friday night.
Kelli Roehrig, who started the decisive run with two free throws, finished with 15 points and 11 rebounds, and Haynie had 13 points as Michigan State (26-3) won its 10th straight game. The second-seeded Spartans, who shared the regular-season title with Ohio State, will face either No. 23 Penn State or Iowa in the semifinals.
Illinois (16-12) was led by Tiffanie Guthrie with 20 points.
It was a departure from Michigan State's typical script. In the nine previous wins, the Spartans trailed for a total of 4:28. This time they were forced to play catch-up for the final eight minutes of the first half and couldn't put Illinois away in regulation.
Michigan State appeared to have control early in the second half when Lindsay Bowen made her first basket with 17:10 left to give the Spartans a 32-28 lead. Bowen finished with 11 points.
Illinois countered with a 7-0 run to retake the lead at 37-34.
Victoria Lucas-Perry, who had 14 points, tied the score with a 3-pointer, starting a stretch in which the teams were tied eight times in the last 10:45 of regulation. Bowen's breakaway layup with 1:05 left made it 50-50.
The Illini had a chance to win on the final possession, but Guthrie's 5-footer from the left baseline bounced off the rim and Michigan State grabbed the rebound to force overtime.
Roehrig's free throws ignited the Spartans' final charge and the weary Illini struggled to get to loose balls as the Spartans pulled away.