Iowa's Jarryd Cole (50) shoots between Iowa State defenders Cameron Lee, left, Diante Garrett (10) and Lucca Staiger (5) during the second half of this NCAA college basketball game, Friday, Dec. 12 2008, in Iowa City, Iowa. Iowa won 73-57.

Iowa City, Iowa ? Jeff Peterson led four Iowa players in double figures with 17 points, and the Hawkeyes pounded rival Iowa State, 73-57, Friday night.

Jermain Davis added 16 points for the Hawkeyes (9-2), who opened the second half on a 25-4 run to blow open what had been a tight game.

Iowa, which led by two at the break, got a pair a threes from Peterson that helped put them ahead 48-34 with 14:55 left. Matt Gatens pushed Iowa’s lead to 16 by cutting through the lane for a layup and hitting a pair of free throws, and Peterson followed Devan Bawinkel’s three with a layup to make it 59-36 with 10:45 to go.

Diante Garrett had 16 points to lead Iowa State (6-3), which lost its second straight to an instate school. The Cyclones blew a late lead and lost at home to Drake, 66-63, on Tuesday.