Source: Rumbelow needs Tommy John

News surfaced that Yankees minor league pitcher Nick Rumbelow will need to undergo Tommy John Surgery. GM Brian Cashman has confirmed.

Source says Nick Rumbelow needs Tommy John surgery.

— Lohud Yankees Blog (@LoHudYankees) April 11, 2016

Chad Jennings of LoHud says Rumbelow was placed on the 15-day disabled list and that it was caused from warming up before the start of the fifth innings last night. The 24-year-old pitched in 17 games to a 4.02 earned run average in his first season in the Bronx. He was battling for one of the bullpen spots out of spring training but lost out late in camp. It is a tough blow to the Yankees bullpen depth and to Rumbelow, who is a promising young pitcher with a big arm. 

Johnathan Holder promoted to Trenton. Mullee promoted to SWB. #Yankees — Matt Kardos (@mattkardos) April 11, 2016

Conor Mullee has been promoted from Double-A Trenton to Triple-A Scranton/Wilkes-Barre to replace Rumbelow. Also, Jonathan Holder will replacee Mullee on the Trenton roster.