The Yankees assigned Jennings to short-season Staten Island, but he'll presumably make a handful of appearances in the lower levels of the minors before moving up to Triple-A Scranton/Wilkes-Barre. The 32-year-old lefty previously made eight appearances at the big-league level with the Nationals this season, giving up seven runs over 4.2 innings before being designated for assignment in May.

He was recently designated for assignment by the Nationals, which was not to his liking, so he will hope a better opportunity emerges on the open market. He had some success with the Brewers last season, but would be confined to a low-leverage role no matter where he latches on.

Jennings will cede his 40-man roster spot to waiver pickup Javy Guerra and his spot on the active roster to Tony Sipp (oblique), who was activated from the 10-day injured list. Valued as a lefty specialist for much of his career, Jennings has allowed eight of the 18 left-handed hitters he has faced this season to reach base.

Entering the game with the score knotted at 4-4, the veteran southpaw breezed through the top of the Mets' order before the Nats took the lead for good in the bottom half of the frame. Jennings has made seven appearances since joining the club and been scored upon in four of them, saddling him with an 11.25 ERA, and his low-leverage role leaves him with little fantasy ceiling even if he does turn things around.