Floro was optioned to Triple-A Durham on Monday, Roger Mooney of the Tampa Bay Times reports.
Floro has been less than stellar out of the bullpen since being recalled in early July, posting a 4.20 ERA and 1.87 WHIP across 15 innings. The 25-year-old will now return to Triple-A with the Rays in need of a spot on the 25-man roster after activating Logan Morrison on Monday.