May 25 (UPI) -- Toronto Blue Jays pitcher David Phelps will miss the remainder of the season after undergoing surgery to repair the latissimus dorsi muscle on the right side of his back, the team announced Tuesday.
The Blue Jays said the 34-year-old Phelps had the procedure Monday.
Phelps last pitched May 2 against the Atlanta Braves. A few days later, he felt discomfort while warming up against the Oakland A's and was replaced by Tyler Chatwood.
The Jays said at the time that Phelps was experiencing discomfort in his pitching shoulder and later sent him for an MRI.
"He was awesome for the bullpen. He was awesome for the young guys and we're going to miss him a lot," Blue Jays manager Charlie Montoyo told reporters Tuesday. "He was probably one of our best relievers, and what he did in the clubhouse was awesome, too."
Phelps has a 34-38 record with a 3.90 ERA and six saves over nine MLB seasons for the New York Yankees (2012-14), Miami Marlins (2015-17), Seattle Mariners (2017), Blue Jays (2019, 2021), Chicago Cubs (2019), Milwaukee Brewers (2020) and Philadelphia Phillies (2020).
He returned to the Blue Jays this year on a one-year, $1.75 million contract.
Phelps missed the entire 2018 season after getting injured during spring training. He later underwent Tommy John surgery.