It’s officially a case of What Might Have Been for the Red Sox bullpen as righthanded reliever Carson Smith is gone for the rest of the season after having Tommy John (ulnar collateral ligament reconstruction) surgery today on his right elbow.

The operation will be performed this afternoon at the Hospital for Special Surgery in New York City by Dr. David Altchek (rare not to see Dr. James Andrews name here).

Smith’s Red Sox debut went south right from Fort Myers and the sidearm fireballer started the season on the DL with a right flexor strain. Smith came back and looked sharp for a short stint but his right arm acted up against the A’s on May 9. And that was the season in 2.2 innings.

Now there’s officially more pressure on Junichi Tazawa and Koji Uehara at the back end of the pen with Smith completely out of the picture until sometime in 2017.

Wade MIley (Joe Nicholson-USA TODAY Sports)
Wade Miley (Joe Nicholson-USA TODAY Sports)

Smith came to Boston via the Mariners who received lefthanded innings-eater Wade Miley and minor league reliever Jonathan Aro in exchange Smith and Cuban lefty Roenis Elias.

Miley (5-2 with a 4.52 ERA) won his fifth straight decision (third straight game) for the M’s when Seattle beat the Cincinnati Reds, 5-4, on Sunday.

Smith is under Red Sox control for four more seasons starting in 2017.