Oliver was released by the Brewers on Wednesday, Jim Goulart of Brewerfan.net reports.
Oliver has had a rough season at Triple-A Colorado Springs in his first year with the organization, racking up a 7.59 ERA and a 20:15 K:BB over 21.1 innings in relief. The southpaw showed signs of promise last season with the Orioles' Triple-A affiliate, posting a 3.43 ERA in 14 starts, but he will look to latch on elsewhere in hopes of continuing his career.