Acosta struggled consistently throughout the first two months of the season, giving up a three-run homer Monday to bloat his ERA to 11.86, while averaging more than two baserunners per inning. Though he ranked among the team's best relievers in 2010 and '11, he was unable to duplicate that success in 2012.
While Acosta navigates the waiver wire, the Mets will proceed with Schwinden, who was available only in an emergency Tuesday because he had pitched two days earlier. Schwinden and Jack Egbert should give the Mets multiple middle-innings options for the time being, with another reinforcement potentially on the way.
Once Pedro Beato is eligible to come off the 60-day disabled list on June 3, general manager Sandy Alderson said, he should be healthy enough to join either the Mets or one of their Minor League affiliates. Beato has been sidelined since Spring Training with right shoulder stiffness.
"I would fully expect that he will be healthy and ready to go and pitch somewhere on [June 3]," Alderson said. "Whether it's here or someplace else, I couldn't predict."