The Rangers have announced that they’ve claimed lefty David Rollins off waivers from the Phillies. In a corresponding move, they’ve designated righty Tyrell Jenkins for assignment.

The Phillies designated Rollins for assignment last week. His claim by the Rangers marks the fourth such time he’s been claimed in a little over a month. The Cubs claimed him from the Mariners in November, only to lose him on a claim to the Rangers four days later. The Phillies claimed Rollins from the Rangers early this month, and now the Rangers are claiming him for a second time.

Rollins spent most of the 2016 season with Triple-A Tacoma, posting a 3.77 ERA, 6.4 and a strong 1.2 BB/9 in 45 1/3 innings of relief. The former Rule 5 pick has struggled in parts of two big-league seasons with the Mariners. He turns 27 today.

The Rangers only acquired Jenkins earlier this month, getting him along with lefty Brady Feigl from the Braves in exchange for hard-throwing righty Luke Jackson. Jenkins was once a well-regarded prospect in the Cardinals system before going to the Braves in the Jason Heyward deal. Since then, though, Jenkins has posted unimpressive peripheral numbers in both the minors and Majors, culminating in a 5.88 ERA, 4.5 K/9, 5.7 BB/9 and an awful 11 home runs in 52 innings in his big-league debut last season. Jenkins is still just 24 and has never been used much as a reliever, so another team could see upside in him, either as a starting option or out of the bullpen.