The Athletics have designated Rich Thompson for assignment, the team announced. The move creates room on the 40-man roster for Jim Miller, who was recalled from Triple-A.
Thompson, 27, was claimed off waivers from the Angels last week. He faced three batters during his brief time with Oakland, allowing a single in between two outs. The Angels designated the Australian-born right-hander for assignment after he allowed four runs in his first 2 1/3 innings of the season. Thompson pitched to a 3.00 ERA with 9.3 K/9 and 3.3 BB/9 in 54 innings last season and is out of options, meaning he can't be sent to the minors without first clearing waivers.