To make room on the roster for Cobb, outfielder Kevin Kiermaier was optioned to Triple-A Durham after Wednesday night's game against Oakland. Following Wednesday night's 3-2 loss to the A's, the Rays optioned outfielder Kevin Kiermaier to Triple-A Durham. Kiermaier continues to make an impression on Rays manager Joe Maddon, particularly with his superlative defense. Cobb had been on the DL since April 13. Right-hander Alex Cobb was to be reinstated from the disabled list to make his start on Thursday. MLB.com's coverage includes Draft Central, the Top 100 Draft Prospects list and Draft Tracker, a live interactive application that includes a searchable database of Draft-eligible players. ST. Tampa Bay Rays starting pitcher Alex Cobb has been activated from the 15-day disabled list after missing almost six weeks with a strained side. Live Draft coverage from MLB Network's Studio 42 begins at 7 p.m., with the top 74 picks being streamed on MLB.com and broadcast on MLB Network.