Red Sox place RHP on IL with ulnar neuritis

The Red Sox announced that right-hander Garrett Whitlock has been placed on the 15-day injured list with right elbow ulnar neuritis. Fellow righty Brayan Bello was recalled to take his spot on the active roster.

The club didn’t provide any more information about Whitlock’s injury, so the severity isn’t publicly known at this time. It’s possible that the Sox are still doing more testing, as ulnar neuritis comes with a wide range of possible outcomes. The ulnar nerve is commonly known as the “funny bone” due to the tingling sensation it causes when agitated. Neuritis is the medical term for when there is inflammation of the nerve.

It’s too early to draw conclusions, but the diagnosis is nonetheless concerning. Rays left-hander Jeffrey Springs was recently diagnosed with ulnar neuritis and just a few days later was reported to require Tommy John surgery. That’s not to say that Whitlock is inevitably headed down the same path, as Blue Jays right-hander Jordan Romano was diagnosed with the same ailment in April 2021 but was back after just 10 days.

Whitlock already had Tommy John surgery back in 2019 but said he isn’t concerned he’s headed down that path again. He told reporters, including Alex Speier of the Boston Globe, he felt some tingling recently but doesn’t think it’s at all similar to his torn UCL from years ago. He’s hasn’t had an MRI yet.

That’s surely encouraging, but Whitlock and the Red Sox will be in wait-and-see mode until it can be discovered exactly which part of the spectrum his injury is on. He’s attempting to make the transition to full-time starting this year after working primarily in relief for the past two seasons. He began the year on the injured list after being delayed in spring by last year’s hip surgery. He’s only made three starts on the year so far because of that, registering a 6.19 ERA in that small sample.

He posted a 1.96 ERA out of the bullpen in 2021 after being plucked from the Yankees in the Rule 5 draft. That instilled enough confidence in the Red Sox that they signed him to an $18.75M extension through 2026 with two club options after that. They then tried to stretch him out last year, but injuries eventually pushed him back into the bullpen.

Whitlock was scheduled to start Saturday’s game, but that will now presumably fall to Bello, who just started for the big league club on Sunday. The young prospect is seen as a future building block of the rotation but has posted a 9.82 ERA in his two starts so far this year. Both Bello and Whitlock began the year on the IL, and the club briefly ran out a six-man rotation when they returned. Bello then was sent down earlier this week. He’d normally have to stay down for 15 days after being optioned, but an exception is made when another player goes on the IL.

It’s possible that it could be another short stay in the rotation for Bello alongside Chris Sale, Nick Pivetta, Tanner Houck and Corey Kluber. Lefty James Paxton has been on the IL all year but has made four rehab starts already as he tries to get back into game shape. He’s only made six major league starts since the end of 2019, with Tommy John surgery wiping out most of his 2021. He was working his way back to the mound in 2022 when he suffered a lat strain that killed his chances. His subsequent attempt at a return this spring was set back by a hamstring injury.