Texas Rangers left-hander Matt Harrison will not return this season while he continues to recover from two back surgeries earlier this year.
Harrison, the team's Opening Day starter, made only two starts covering 10 2/3 innings, the last coming on April 6, before he experienced back issues. He had the first of his two surgeries for a herniated disk in late April.
The 27-year-old went to the minors leagues on a rehab assignment in late July but felt pain in his left elbow and numbness in his hand last week at Triple-A and the team made a decision to shut him down for the year.
Rangers general manager Jon Daniels indicated that the team doctor felt Harrison came back too soon and was altering his delivery, leading to the arm issues. Daniels said Harrison should be fully recovered for spring training.
After posting 14-9 and 18-11 records in 2011 and 2012, Harrison signed a five-year, $55 million contract extension in January that includes a team option for 2018.
The Rangers also are without Colby Lewis (hip surgery) in their rotation, but they added Matt Garza from the Chicago Cubs at the trade deadline last month to give them an extra arm.