Liriano gave up seven runs in just two innings Monday night, dropping his record to 5-12 with a 5.80 earned-run average in 23 starts.
After starting out 12-3 as a rookie in 2006, he had Tommy John surgery and missed the 2007 season. He was 6-4 in 2008, offering hope for a solid 2009 season.
The Twins are bringing up Philip Humber from Class AAA Rochester to fill Liriano's roster spot. Humber was 7-7 with a 5.28 ERA in 21 games for Rochester.
Humber, primarily a starter, appeared in four games out of the Twins bullpen early this season. He did not record a decision and produced a 12.46 ERA.
Copyright 2009 by United Press International.