NEW YORK (AP) — Jake Peavy is having a hard time getting healthy.

Still waiting to make his first start for the Chicago White Sox, Peavy left his minor league rehab outing after only 3 1-3 innings and 68 pitches Saturday night because he felt tightness in his pitching elbow.

The right-hander, acquired from San Diego at the July 31 trade deadline, was hit on that elbow by a line drive in his previous start for Triple-A Charlotte. Chicago manager Ozzie Guillen said Peavy will join the White Sox by Monday in Minnesota, where he is expected to get X-rays and be evaluated by the club’s medical staff.

Chicago was set to complete a series at Yankee Stadium on Sunday before opening a three-game set against the Twins on Monday night.

The 2007 NL Cy Young Award winner, Peavy has been on the disabled list since June 13 with a strained tendon in his right ankle. He has made four rehab starts with Charlotte, going 1-1 with a 2.93 ERA and 17 strikeouts in 15 1-3 innings.