In need of a replacement for the injured Jake Peavy and an additional fresh arm after Sunday's marathon game in Seattle, the White Sox recalled right-hander Deunte Heath from AAA Charlotte and purchased the contract of right-hander Ramon Troncoso from Charlotte.
Troncoso, 30, is 1-1 with a 2.19 ERA and eight saves for Charlotte. He pitched in 175 games in relief over parts of four seasons with the Dogers from 2008-11. In 2009 he was 5-4 with a 2.72 ERA and six saves.
Heath is 1-0 with a 2.25 ERA at Charlotte. He gave up seven earned runs over 5 2/3 innings when he was up with the White Sox this season.
Peavy (6-4, 4.30 ERA) was placed on the 15-day disabled list with a displaced rib. He will be shut down four to six weeks.
Right-handed reliever Brian Omogrosso, 29, was optioned to Charlotte. He was 0-1 with a 5.14 ERA in 11 relief appearances since coming up from Charlotte on May 1.