MADISON, Wis. – D.J. Byrd scored 16 of his 22 points in the second half and Purdue upset No. 17 Wisconsin 69-56 Sunday afternoon.

Terone Johnson added 16 points for the Boilermakers (14-15, 7-9 Big Ten), who had lost three straight road games and four of five overall. Purdue took control with a 21-3 run in the second half during which Byrd had nine points and Johnson eight.

Jared Berggren scored 13 points and Ryan Evans and Sam Dekker had 10 apiece for the Badgers (20-9, 11-5), who had won six of their previous seven.

The loss left Wisconsin barely clinging to title hopes in the tightly contested Big Ten: The Badgers need to win their final two games, Thursday at No. 9 Michigan State and Sunday at Penn State, and get a lot of help to claim a share of their first conference championship since 2007-08.

Byrd hit three three-pointers and Johnson added four baskets in the decisive 21-3 run as Purdue pulled away, silenced the crowd at Kohl Center and won here for the first time since January 2009.

The Badgers, who had won each of their previous three games by at least 20 points, missed five of six shots from the field and committed four turnovers in the 7:31 stretch as they fell behind 54-45.