On April 20, Marks made his big league debut in an 8-3 loss to Minnesota at Kauffman Stadium. He pitched two innings and gave up three runs, four hits and three walks. His three-day stay in the Majors ended the next day, when he was optioned back to Triple-A Omaha.
With Omaha this season, Marks was 3-2 in 13 games (two starts), posting a 5.04 ERA. He was designated for assignment on Monday to clear a spot on the 40-man roster for pitcher Wilking Rodriguez.
Dick Kaegel is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.