Fairbanks was placed on the 10-day injured list Friday with a right rotator cuff strain, Adam Berry of MLB.com reports.
The right-hander surrendered a run over 1.1 innings during his last appearance Tuesday at Boston, and he'll now be sidelined for the near future. According to Neil Solondz of the Rays Radio Network, Fairbanks will be shut down from throwing for 2-to-3 weeks, so he'll likely be unavailable until at least early May. Diego Castillo is 2-for-3 in save chances this season and should continue to operate as the primary closer with Fairbanks and Nick Anderson (elbow) sidelined.