Oakland, CA (SportsNetwork.com) - The Oakland Athletics designated former closer Jim Johnson for assignment on Thursday.
Johnson has struggled since being acquired in an offseason trade with the Baltimore Orioles. He was removed from the closer's role earlier this season.
The right-hander was 4-2 with two saves, one blown save, and a 6.92 ERA this season. Opponents were hitting .353 against him in 38 relief appearances and his ERA is the highest among major league relievers.
Johnson allowed 12 runs on 13 hits in 4 1/3 innings over his last five games.
Johnson was replaced on the active roster by right-handed pitcher Evan Scribner, who was recalled from Triple-A Sacramento.
Scribner was on the A's Opening Day roster and tossed 1 1/3 scoreless innings in two appearances before he was optioned to Sacramento April 7. He returned for a second stint June 17 but did not appear in a game before he was sent back to the River Cats on June 20.
The 29-year-old Scribner is 4-1 with a 3.35 ERA and .243 opponents batting average in 31 games with Sacramento and ranks fourth in the Pacific Coast League with 14 saves.