Rangers starting pitcher Matt Harrison underwent an L5-S1 lumbar fusion Tuesday at the Carrell Clinic in Dallas, the club announced during Tuesday night's game.

The surgery very likely ends Matt Harrison's 2014 season, though no further information was provided with the announcement from the team.

Harrison will remain hospitalized for at least two more nights. Dr. Andrew Dossett performed the surgery.

The left-hander hit the disabled list with L5-S1 spondylolisthesis on May 14, the same day that fellow lefty Martin Perez went on the DL with UCL ligament damage.

Harrison's condition is caused when a verterbra slips out of place. He made just four starts after his return from multiple surgeries last offseason to repair a herniated disc in his back.

His contract is insured, so the Rangers would receive a majority of the remainder of Harrison's $55 million contract that he signed before the 2013 season should he not be able to pitch again.

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