The New York Mets placed right-handed pitcher Taijuan Walker on the 10-day injured list on Tuesday because of bursitis in his pitching shoulder in the latest setback to the team's rotation.
The Mets are 14/1 to win the World Series and have started the season 4-2 with Tylor Megill the star pitcher to date. However, Walker threw two perfect innings on Monday night at Philadelphia in his season debut, then was pulled after 30 pitches.
He was replaced by left-hander David Peterson, who will fill in for the 29-year-old in the rotation. Walker was 7-11 with a 4.47 ERA last season, his first with the Mets, and was picked for the National League All-Star Team.
A strong first half was followed by a terrible second half, and he had a clean-up procedure on his knee in the offseason.
Speaking to the official New York Mets website after the loss to the Phillies on Monday, Walker said: "I feel pretty good about it. It's already feeling better now, but we had the MRI just to know what we are dealing with."
The Mets are already missing two-time NL Cy Young Award winner Jacob deGrom until June with inflammation around his shoulder blade.
Three-time Cy Young winner Max Scherzer is set to pitch on Wednesday against the Philadelphia Phillies. He had a hamstring injury during spring training, but was able to start last weekend at Washington.
In other roster moves, the Mets activated closer Edwin Diaz from the bereavement list and sent right-hander Yennsy Diaz outright to Triple-A Syracuse.