Quantrill will not start in Sunday's series finale against the Orioles due to right triceps inflammation, Patrick Lyons of JustBaseball.com reports.
Quantrill made his last start Tuesday against the Marlins, when he allowed four runs on seven hits and five walks while striking out two across 5.2 innings in a no-decision. The 29-year-old right-hander has struggled over his seven starts since the All-Star break, posting a 2-2 record with a 6.06 ERA, 1.63 WHIP and 25:18 K:BB over 35.2 innings. It's unclear whether the triceps injury will keep him out of his next start, which is pencilled in for Sept. 7 against the Brewers. Southpaw Ty Blach will be recalled from Triple-A Albuquerque and start Sunday.