Stillwater, Okla. ? Oklahoma State broke open a close game with a sixth-run seventh inning and defeated Kansas’ baseball team, 7-0, on Friday night.

The Jayhawks had just six hits, all singles, including two by Ryan Pidhaichuk. KU managed just one hit in the last six innings.

The game was scoreless through five innings before OSU took a 1-0 lead in the sixth.

Jordan Piche (4-5) allowed six runs off 10 hits in six-plus innings and took the loss.

“That’s the best start he’s had since we put him in the rotation three weeks ago,” KU coach Ritch Price said. “I couldn’t have been more pleased. To hold that offensive club, one of the best in the league, to one run through six innings was just fabulous on his part.”

The Jayhawks fell to 23-17 overall, 6-7 Big 12, and Oklahoma State improved to 27-11 and 9-4.

The series will continue with a 3 p.m. game today and conclude with a 1 p.m. game Sunday.

Benjamin has surgery

Kansas starting pitcher Wes Benjamin recently underwent Tommy John surgery, Price announced Friday.

Benjamin, 4-0 this season, exited with tightness in the third inning against Oklahoma on March 28. He will be out nine to 12 months.

Kansas 000 000 000 — 0 6 1

Okla. St. 000 001 60x — 7 14 0

W — Jon Perrin (5-2). L — Jordan Piche (4-5).

2B — Tanner Krietemeier, OSU.

KU highlights — Ryan Pidhaichuk 2-for-3; Tucker Tharp 1-for-3; Justin Protacio 1-for-4; Tommy Mirabelli 1-for-4; Michael Suiter 1-for-4.