The Oakland Athletics demoted starting pitcher Jharel Cotton to Triple-A Nashville on Thursday.
Cotton, who was acquired in a trade with the Dodgers last season that sent Josh Reddick and Rich Hill to Los Angeles, has struggled this season after showing promise for Oakland in September.
The 25-year-old right-hander is 3-4 with a 5.68 ERA in seven starts this season. He dazzled for the A's in September, going 2-0 with a 2.15 ERA in five starts after the trade.