O'Brien yielded two hits in a scoreless frame to pick up his first hold of the season in Saturday's extra-inning win over the Rays.
O'Brien was first out of the bullpen for the Cardinals in the seventh inning, called upon to protect a two-run lead after Michael McGreevy spun six no-hit frames. Junior Caminero broke up the combined no-hit effort by singling on the first pitch he saw but was immediately erased with a double play. O'Brien then yielded an infield single but finished off the inning with a groundout. The 31-year-old has now registered a win and a hold in his first two appearances, but the first two save chances for the Cardinals have gone to Ryne Stanek.