The Rays reinstated Feyereisen (biceps/shoulder) from the 10-day injured list Monday, Neil Solondz of the Rays Radio Network reports.
Tampa Bay sent long reliever Josh Fleming out to Triple-A Durham to clear a spot in the bullpen for a high-leverage arm in Feyereisen, who had been on the shelf since July 21 with shoulder discomfort and right biceps tendinitis. Prior to being sidelined, Feyereisen compiled a 2.42 ERA and 1.34 WHIP to go with three saves and three holds in 21 appearances since coming over in a late-May trade with the Brewers.