[Updated 4:58 p.m.]
The Nationals' ever-changing bullpen will open the second half of the season with another alteration after the club placed right-hander David Carpenter on the 15-day disabled list with shoulder inflammation (retroactive to July 12) and recalled lefty Sammy Solis from Class AA Harrisburg to take his roster spot.
Carpenter had been a welcome addition to the Nationals' bullpen after his acquisition from the Yankees last month, posting a 1.50 ERA in eight appearances, putting only seven men on base in six innings, and earning some usage in high-leverage situations.
Manager Matt Williams was prepared to use Carpenter in another big spot Saturday in Baltimore, with the Nationals trying to hold a late lead against the Orioles. The 30-year-old was warming up in the bullpen at Camden Yards but took a seat after feeling discomfort in his arm. Casey Janssen wound up pitching the eighth inning and helping the Nats secure a victory.
"Before the break there was a couple of times where he got up in the bullpen and one time in particular in Baltimore that he got up and we were going to get him in the game and he couldn't go," Williams explained.
Williams said Carpenter tested his shoulder in a throwing session on Thursday night.
"Last night he threw, but still was feeling it a little bit. Rather than play short… we decided to put him on the DL and retro him to the 12th and make sure he's ready to go when he gets back."
Solis, 26, owns a 4.50 in six appearances this season, mostly as a long reliever. Once a highly touted starter within the organization, the left-hander has resurrected his career as a reliever after battling injuries for several years.
Williams will rely on several players to replace Carpenter, who had become one of his most reliable options for the eighth inning.
"It will be a number of guys depending on the situation and depending on the matchup and what the game presents us. We have options. Of course, Casey's familiar with it. [Matt] Thornton's familiar with it. We can use [Aaron] Barrett, we can use either of the lefties depending on workload, who's pitched and who hasn't," Williams said.