The Oakland Athletics acquired right-hander Burch Smith on Saturday in a trade with the San Francisco Giants, who had designated the pitcher for assignment Monday. Smith, 29, had a 2.08 ERA in 10 appearances with the Giants last season after he was selected off waivers from the Milwaukee Brewers. In three seasons with the San Diego Padres, Kansas City Royals, Brewers and Giants, Smith is 2-10 with a 6.57 ERA in 65 appearances (13 starts).