The Athletics have designated Sandy Rosario for assignment, the team announced. The move creates room on the roster for the recently acquired Chris Resop.
Rosario, 27, was acquired from the Red Sox earlier this week. He pitched in four games for this year's Marlins team, but spent most of the season in the minor leagues. He posted a 1.99 ERA with 8.2 K/9 and 1.4 BB/9 in 31 2/3 total innings for three of Miami's affiliates.
