Canning (elbow) will be activated to start Tuesday's game against the Pirates, Maria Torres of the Los Angeles Times reports.
The rookie right-hander logged a 5.94 ERA, 1.36 WHIP and 52:17 K:BB in 47 innings over his 10 starts prior to landing on the shelf. Since the start of June, Pittsburgh ranks sixth in the majors with a 109 wRC+ against righties. He last started July 30 and logged six innings in that outing.