CHICAGO – Prior to today’s game vs. Oakland, the Chicago White Sox returned right-handed pitcher Kelvin Herrera from his injury rehabilitation assignment at Class AAA Charlotte and reinstated him from the 10-day injured list.

Herrera, 29, takes the roster spot of right-hander José Ruiz, who was optioned to Charlotte following last night’s game. He made three appearances (one start) with the Knights on his rehab assignment.

 Herrera has gone 3-3 with a 7.36 ERA (27 ER/33.0 IP), six holds and 31 strikeouts over 38 relief appearances this season, his first with the White Sox.