Brandon Gomes is currently with the Rays due to one reason, he doesn't have any options and the team doesn't want to risk losing him on the waiver wire. At best, he's been a mopup reliever this season, but for some reason he has been used in high-leverage situations and has floundered.
Acquired before the start of the 2011 season, Gomes was probably the highest regarded piece in the deal that pretty much rebuilt the Rays bullpen that season. Gomes has been up and down with the Rays over the past few season, sometimes showing glimpses of being the elite arm the team hoped he'd become but unfortunately he has fallen off a cliff this year.