DES MOINES, Iowa (Ticker) -- Cole Liniak went 4-for-4 with a grand slam homer to power the Iowa Cubs to a 10-3 triumph over the Oklahoma Redhawks. Liniak, who smacked three doubles and scored three runs, gave Iowa a 10-1 advantage in the fifth inning after Alan Zinter was intentionally walked to load the bases. Julio Zuleta belted a two-run shot, his third home run in two games, and Raul Gonzalez triggered a six-run fifth inning with a two-run double for the Cubs. Pedro Valdes knocked in three runs and B.J. Waszgis tripled and scored for Oklahoma. Mike Heathcott (1-2) allowed three hits and one run in 3 1/3 innings to pick up the win in relief. Starter Brian Sikorski (1-4) was shelled for eight hits and nine runs in only 4 1/3 innings to take the loss for the Redhawks, who allowed an opponent to score in double digits for the sixth time in their last 17 games.