Fairbanks (shoulder) was reinstated from the 10-day injured list ahead of Friday's game against the Orioles, Neil Solondz of the Rays Radio Network reports.
Fairbanks landed on the injured list in late July with shoulder inflammation but was able to resume throwing shortly after. He began a rehab assignment with Triple-A Durham last Sunday and wound up allowing a solo homer while striking out two across a pair of one-inning outings. The 27-year-old has converted five of six save chances this season, and he will likely get more opportunities to close games down the stretch.