The Athletics have designated lefty reliever Eury De La Rosa for assignment, Susan Slusser of the San Francisco Chronicle tweets. The move clears space on the 40-man roster for infielder Max Muncy, who’s needed because the A’s are placing Ben Zobrist on the 15-day disabled list. Slusser also tweets that if Zobrist has arthroscopic knee surgery, which currently seems to be a possibility, he would likely be out three to six weeks.
The Athletics acquired the 25-year-old De La Rosa in a December trade after the Diamondbacks designated him for assignment. He’s spent the beginning of the 2015 season pitching at Triple-A Nashville, where he struck out four batters and walked five in six innings. Last season, he posted a 2.52 ERA with 8.2 K/9 and 4.6 BB/9 in 39 1/3 innings at Triple-A Reno, along with a 2.95 ERA, 7.9 K/9 and 3.4 BB/9 in 36 2/3 innings in the big leagues.