The Cardinals optioned Dobbins to Triple-A Memphis on Tuesday.
Dobbins gave up four earned runs in 5.1 innings while serving in a piggyback role Monday, and he'll now head back to Triple-A to make room in the bullpen for Peter Strzelecki. Despite a poor showing Monday, Dobbins still owns a 3.74 ERA through 33.2 innings in the majors and could potentially rejoin St. Louis' rotation soon if the Cardinals unload another starter before the trade deadline.