CHICAGO – Chicago White Sox closer Bobby Jenks has been on the disabled list with a sore left shoulder, and now he’s had his rehab assignment transferred from Class A Winston-Salem to Double-A Birmingham.

Jenks has 18 saves in 21 chances. He pitched for Winston-Salem on Monday and gave up one run and three singles. He hadn’t pitched since June 29th.

The White Sox also announced Wednesday that utility infielder Pablo Ozuna had rejected an outright assignment to Triple-A Charlotte. The Sox then asked for waivers on Ozuna for the purposes of granting him unconditional release.

Ozuna batted .281 with six RBIs in 32 games this season. He was designated for assignment last week when Paul Konerko came off the disabled list.