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(AP) - Kain Colter scored three rushing touchdowns and threw for another score as Northwestern defeated Iowa 28-17 on Saturday.

The Wildcats (7-2, 3-2 Big Ten) have been struggling with their passing game, but had success running the ball. Colter rushed for 166 yards and Venric Mark ran for 162 yards. Mark became Northwestern's first 1,000-yard rusher since Tyrell Sutton in 2006.

Northwestern has won four of its last five against the Hawkeyes (4-3, 2-1), who fell further out of contention in the Big Ten Legends Division. Iowa was hurt by sacks, penalties and lack of execution on offense.

Running back Mark Weisman, a native of Buffalo Grove, Ill., exited late in the second quarter with an injury and rushed for just 21 yards.

Damon Bullock handled most of the rushing and finished with 107 yards.

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