EAST LANSING, Michigan (Ticker) -- Devin Harris deferred his role as Wisconsin's first option down the stretch.
Harris fed Clayton Hanson for a key 3-pointer with 42 seconds remaining as the 14th-ranked Badgers prevented No. 25 Michigan State from earning a share of the Big Ten Conference regular-season crown with a 68-64 overtime triumph.
Michigan State (17-10, 12-4 Big Ten) entered on a five-game winning streak with a chance to earn a piece of the Big Ten title. Instead Illinois, which holds an 11-3 conference mark, has two games remaining with a chance at the outright crown.
Wisconsin (20-6, 11-4) also kept its title hopes alive despite a drought of nearly 10 minutes without a basket in the second half.
Harris, who scored 18 points, had a pair of jumpers in the extra session, with his final basket made it 59-56 with 1:36 remaining.
After the Spartans' Alan Anderson made two free throws to cut the deficit to one point, the Badgers went to Harris. The front-runner for Big Ten Player of the Year honors drove the baseline, drew three defenders and threw a pass to the top of the key to Hanson, whose 3-pointer made it 62-58 with 42 seconds remaining.
"Devin penetrated and I saw my guy turn his head so I went to the open spot and he found me and I was fortunate to knock it down," Hanson said.
Hanson and Mike Wilkinson each made two free throws in the final 16 seconds to counter a pair of 3-pointers by Michigan State's Chris Hill.
"It's a tough road win," Harris said. "We haven't played really well on the road but today we fought through it and I'm really proud of the guys."
Hill had a chance to give his team the lead with 22 seconds to go in regulation but missed a pair of free throws with the score tied at 52-52. Harris missed a jumper 18 seconds later to send the contest into an extra session.
"I look at it as I got to the line and the team was counting on me to make those free throws and I let them down," Hill said. "There is no one to blame but me."
Zach Morley's basket with 11:46 remaining gave Wisconsin a 45-41 lead. Michigan State stiffened and scored nine of the next 10 points for a 50-46 advantage.
After Wilkinson's foul shot, Morley broke the drought with a basket that cut the deficit to 50-49 with 2:14 to go in the second half. Kelvin Torbert's follow shot restored a three-point lead before Harris drained a 3-pointer for a 52-52 tie.
"He hit a couple of threes, but I wouldn't say that they were easy threes," Wisconsin coach Bo Ryan said. "Really, he wasn't getting anything off of the attack, but then, finally, things started to happen."
Wilkinson collected 18 points and 10 rebounds and Hanson came off the bench for 13 points. Wisconsin's "swing" offense struggled with its ball movement and finished with only seven assists.
Paul Davis collected 25 points and 10 rebounds for Michigan State, essentially putting the team on his back. Hill nailed five 3-pointers for all of his points and no other Spartan reached double figures.
Wisconsin has won four straight against Michigan State, which had a nine-game home winning streak snapped.