Mets RH reliever Anthony Swarzak (oblique) began a rehab assignment Tuesday with Triple-A Las Vegas, and could return within a week.
Swarzak, who tossed a scoreless inning on Tuesday, is slated to pitch again for Las Vegas on Friday and Saturday, after which he could be activated.
"I felt OK," Swarzak said after his outing, according to Betsy Helfand of the Las Vegas Review-Journal. There's some work to be done. I felt like this is right where I need to be. It's nice to be able to face hitters at this level because I'm going to get instant feedback on if I'm headed in the right direction or not."
Swarzak said he felt no discomfort when he pitched.
The 32-year-old Swarzak, who has been out since April 1 and is eligible to return on May 31, signed a two-year, $14 million deal this offseason.
Mets manager Mickey Callaway said last week that the team views Swarzak as a pitcher who will be used in a variety of spots upon his return, including high-pressure situations.
"We look at him as a guy that can get righties and lefties out in any situation from the fifth inning on," he said.
Swarzak had a 2.33 ERA (2.74 FIP) and 1.03 WHIP with 91 strikeouts (a career-high 10.59 K/9) in 77 1/3 innings (70 games) last season for the White Sox and Brewers.