Per Michael Silverman of the Boston Herald, Red Sox closer Andrew Bailey will have surgery to reconstruct the ulnar collateral ligament (UCL) in his right thumb.
The injury will keep Bailey on the disabled list until after the All-Star break, according to manager Bobby Valentine.
As far as which reliever will take over ninth-inning duties, the top candidates are Mark Melancon and Alfredo Aceves.
Melancon and Aceves are currently owned in 39 and 21 percent, respectively, of Yahoo! leagues.
Get our updated 2012 reliever rankings here.
