Kahnle has been summoned from Triple-A Charlotte to replace the injured Jake Petricka, who was placed on the 10-day disabled list Thursday with a strained latissimus muscle, Scott Merkin of the White Sox's official site reports.
White Sox manager Rick Renteria was vague about Petricka's timeline, telling Merkin that he'd "be out for a bit," which suggests longer than the 10-day minimum. Kahnle made 29 appearances for the White Sox in 2016, striking out 25 over 27.1 innings. He posted a respectable 2.63 ERA despite allowing 41 baserunners (21 hits, 20 walks), largely due to an impeccable 84.6 percent strand rate.