Cubs starter Alec Mills gave up three runs in the top of the first inning and no one else scored the rest of the game. Mills went seven innings and allowed seven hits, including a two-run home run in the first. Mills struck out three and did not walk anyone.
The loss drops Iowa to a Pacific Coast League-worst 4-12.
Tennessee Smokies
The Tennessee Smokies butterflied the Jacksonville Jumbo Shrimp (Marlins), 2-1.
Thomas Hatch improved his record to 2-0 after he allowed just one run on three hits over five innings.