Peralta has decided to retire from baseball, Marc Topkin of the Tampa Bay Times reports.

Peralta has elected free agency after being designated for assignment by the Cubs last week, Mark Gonzales of the Chicago Tribune reports.

Peralta was designated for assignment Wednesday, Jesse Rogers of ESPNChicago.com reports.

Peralta gave up two runs on three hits - including a home run - in 1.2 innings of relief against the Mets on Sunday.

Peralta had his contract selected by the Cubs on Monday.

Peralta is expected to join the Cubs' bullpen Monday night, Gordon Wittenmyer of the Chicago Sun-Times reports.

Peralta signed a minor league contract with the Cubs on Thursday, Gordon Wittenmyer of the Chicago Sun-Times reports.

Peralta was designated for assignment Thursday, Greg Johns of MLB.com reports.

Peralta was hit hard for the second night in a row Saturday, allowing two runs on two homers without recording an out against the Angels.

Manager Scott Servais said Monday that Peralta "will probably be the guy we'll lean on" in the eighth inning with Joaquin Benoit (shoulder) on the DL, Bob Dutton the Tacoma News Tribune reports.