The free agent starting pitcher was born in Kansas City and went to college at Missouri State. He spent the past two seasons with the Milwaukee Brewers after beginning his career in the American League with the Toronto Blue Jays.
In 2012, Marcum went 7-4 with a 3.70 ERA, but was limited to just 21 starts due to an elbow injury. He's had a history of elbow issues and needed Tommy John surgery in 2008 which forced him to miss the entire 2009 season.
Marcum had his best year in 2011, his first with the Brewers, when he reached 200 innings in a season for the first time, going 13-7 with a 3.54 ERA in 33 starts.
The Royals starting staff struggled this past year, ranking 26th in the MLB with a 5.19 ERA.