Purdue got 16 points from Trevion Williams and relied on a staunch defense to pull off a 71-42 upset over No. 8 Michigan State.
A three-game win streak, including a 10-3 home victory over Iowa, moved MI as high as 14 before its second loss of the season, a more respectable 7-point defeat on the road at Penn State that dropped it to No. 19.
It's also Purdue's second victory over a Top 10 foe this season and its 15th consecutive home win over a Big Ten opponent. Winston now leads the team in PPG and APG, scoring just 7 points with 2 assists in MSU's toughest loss this season, a 71:66 loss to Virginia Tech in the Maui Invitational.
The Spartans (13-4, 5-1 Big Ten) have not won at Mackey Arena since February 20, 2014, a streak of four straight defeats.
Michigan State finished with season-lows in field goals (18), 3-pointers (two), field goal percentage (35.3) and 3-point percentage (12.5) while accumulating a season-high 18 turnovers. "I thought (Purdue coach) Matt (Painter) did one hell of a job". They'd entered the conference clash averaging 81.3 points per game.
Michigan State: Clearly, the Spartans are better than they demonstrated Sunday.
The sold-out crowd of 14,804 never let up, the Spartans never adapted, and one of the most intimidating venues in the country did its part to maintain the remarkable value of homecourt advantage in the Big Ten. Slowing Winston down will be the top priority for Purdue's defense. However, the tight Michigan State vs Purdue odds suggest that this game could be far closer than the records and rankings suggest. They were beaten physically and were careless with the ball.
The model, which simulates every game 10,000 times, has crushed its top-rated college basketball picks against the spread the past three years, returning $2,770 to $100 players. The Boilermakers broke a tie for the second-longest home winning streak against conference opponents in Mackey Arena history.
Purdues Trevon Williams scored 16 points and had seven rebounds and four assists in surprise.
TAMPA, Fla. (AP) - Precious Achiuwa had 22 points and 11 rebounds and Memphis rallied from a 14-point second-half deficit to beat South Florida and stop a two-game losing streak. The Boilermakers have won five of their last six home games against top-10 foes. Purdue is 7-8-1 against the spread so far this season. Evan Boudreaux had 11 points and five rebounds while Sasha Stefanovic and Eric Hunter Jr. each finished with 10 points.
"It was tough", said Winston.
MSU will return home to host Wisconsin on January 17 at 7 p.m.