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07/26/09 8:32 PM ET

Hawkins to get MRI on sore back

Reliever limited by upper back strain and shingles

HOUSTON -- Astros relief pitcher LaTroy Hawkins didn't travel with the team to Chicago on Sunday and will undergo an MRI on his ailing back on Monday in Houston.

Hawkins has been pitching through back pain the past few weeks, and Astros general manager Ed Wade said the procedure would be performed to double-check Hawkins' upper back.

"He's been pitching with an upper back strain and shingles," Wade said. "We just want to see if the discomfort is a strain or a side effect of the shingles. He has been pitching with this for awhile."

The right-hander is 1-4 with a 2.36 ERA and 10 saves in 40 games this year. He's expected to join the team in time for Monday night's game at Wrigley Field.

Brian McTaggart is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.