KANSAS CITY -- Sean O'Sullivan, a right-handed pitcher who was part of the Royals' rotation in 2010 and '11, was dealt to the Blue Jays on Thursday in exchange for cash considerations.
The move adds depth to a Toronto pitching staff that has been hampered by a series of injuries this season. Most notably, Brandon Morrow was forced to the disabled list on June 12 after 13 starts -- including three shutouts -- due to a strained left oblique. Three days later, Kyle Drabek hit the DL with a small tear in the ulnar collateral ligament of his right elbow, and rookie Drew Hutchison, also nursing a right elbow injury, followed Drabek to the DL the next day.
Fellow right-hander Dustin McGowan is on the 60-day DL with multiple shoulder injuries and has yet to make a start this year.
After failing to make the Royals' staff in Spring Training, O'Sullivan, 24, was optioned to Triple-A Omaha, where he was 5-4 with a 6.75 ERA in 17 games including five starts.
The Royals acquired O'Sullivan with left-hander Will Smith from the Los Angeles Angels on July 22, 2010, in a trade for third baseman Alberto Callaspo. Smith is still pitching for Omaha after making three starts (1-2, 9.00 ERA) for Kansas City.
O'Sullivan's Major League record is 10-14 with a 6.13 ERA, including a 5-12 mark with the Royals.
Dick Kaegel is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.