WEST LAFAYETTE, Ind.—Evan Royster ran for 141 yards and a touchdown, and No. 6 Penn State beat Purdue 20-6 on Saturday.

Royster also had 53 yards on four catches for the Nittany Lions (6-0, 2-0 Big Ten).

Daryll Clark completed 18 of 26 passes for 226 yards and ran for a score for Penn State, which outgained Purdue 422 to 241 in its last test before next Saturday’s showdown at Wisconsin.

Purdue quarterback Curtis Painter finished 13-for-22 for 112 yards. He moved past Mark Herrmann into second place on the school’s career yards passing list, but on a day in w...

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