The Brewers recalled Stallings from Triple-A Nashville on Tuesday.
The right-hander is getting his first promotion to the majors after posting a 3.36 ERA, 1.24 WHIP and 61:22 K:BB across 67 innings for Nashville this season. Stallings has started in 12 of his 17 appearances at Triple-A this year, but he's likely to work out of the bullpen with the big club.