MADISON, Wisc. -- D.J. Byrd had 22 points and eight rebounds as Purdue upset No. 17 Wisconsin 69-56 Sunday afternoon at the Kohl Center.
The Boilermakers used a 22-3 second-half run to overcome a five-point halftime deficit and win in Madison for the first time since 2009.
Byrd also picked up two assists and two steals while Terone Johnson added 16 points with six rebounds and four assists for the Boilermakers (14-15, 6-9).
For Wisconsin (20-9, 11-5), Jared Berggren finished with 13 points, eight rebounds and four blocks. Ryan Evans and Sam Dekker scored 10 points each while Ben Brust added eight.
The loss is a major setback to the Badgers' hopes at catching Indiana at the top of the Big Ten standings. Wisconsin started the day a game behind the Hoosiers, tied for second place with Michigan State -- which travels to Michigan later Sunday afternoon.
After slowly building what seemed like a comfortable 13-point lead with 7:08 remaining in the first half, the Badgers quickly went cold and led by just five at the intermission. Purdue took advantage of the situation, going on a 12-4 run to draw within a point on Byrd's 3-pointer with 15:11 to play.
The Boilermakers stayed hot, going ahead by nine before a Berggren dunk -- Wisconsin's first field goal in nearly six minutes -- made it 54-47 with 8:55 to play. The 3-point play was especially problematic for the Badgers, who missed all 10 of their long-range attempts after going 6 of 15 in the first half.
The Badgers shot just 8 of 27 (29.6 percent) in the second half and 22-of 54 for the game. Purdue finished at 45.6 percent (26-for-57) and made 6 of 11 3-point attempts while scoring 18 points on 12 Wisconsin turnovers -- 10 off seven in the second half.
NOTES: Wisconsin had been 11-0 on Senior Day under Bo Ryan ... Purdue snapped a four-game road losing streak ... Ben Brust was averaging 14.7 points and 3.0 3-pointers in his last seven games but finished with just eight and went 2-for-7 on 3-point attempts Sunday ... Purdue freshmen Donnie Hale, A.J. Hammons, Rapheal Davis and Ronnie Johnson are averaging a combined 29.9 points per game, which accounts for 46.5 percent of the Boilermakers' offense. ... The Badgers went 6-1 in February. During Ryan's 12 seasons, the Badgers have gone 79-27 (.745) in regular-season games played after Feb. 1.