Garcia, who has not pitched since Aug. 22 because of tightness in his right forearm, threw 60 pitches in the bullpen Sunday and reported no soreness to manager Ozzie Guillen.
“I have to be careful with him,” Guillen said of Garcia, who has gone 6-3 with a 4.79 ERA in 11 starts for Chicago since being traded to the White Sox in late June.
In his last start on Aug. 22 against Boston, Garcia went seven innings, allowing five runs and seven hits while striking out seven in Chicago’s 6-5 loss. He did not receive a decision.
The right-hander allowed four runs or fewer in each of his first nine starts for Chicago, but was pounded for 14 runs and 18 hits over 11 1-3 innings in his last two outings.
The White Sox won Monday’s series opener 7-4 but dropped a 10-3 decision Wednesday as Kenny Rogers earned his 16th win of the year for Texas.
David Dellucci keyed a seven-run second with a three-run double for the Rangers, who had lost seven of eight.