Photo by Mark Zuckerman / NATS INSIDER
Tyler Walker said his shoulder had been bothering him for almost two weeks.
Walker, who hadn't pitched in nine days, said he first began feeling shoulder pain during a multiple-inning appearance June 15 in Detroit. "The next day I could barely lift my arm," he said.
An MRI revealed inflammation of the AC joint in his throwing shoulder, but no structural damage. He's due to fly home to Washington tomorrow to receive a cortisone shot. The club believes he'll be ready to return after the minimum 15 days of DL time are complete.
"It's a bit begrudgingly that I do it," the 34-year-old said. "But it's an opportunity to get it feeling good for the rest of the season. That's the main goal: Get back out there as soon as possible."
Walker is 1-0 with a 3.57 ERA in 24 relief appearances this season, most of them coming with the Nationals trailing. He posted a 1.29 ERA over his last 10 games, holding opponents to a .224 batting average.
Stammen flew to Atlanta earlier today and will return to the Nats' rotation tomorrow after a brief, three-week stint in the minors. He was optioned to Syracuse on June 6 when the club needed to clear space for Stephen Strasburg but pitched well in three starts for the Chiefs, going 2-0 with a 2.25 ERA and issuing only three walks in 20 innings.