Oakland outrighted Kay to Triple-A Las Vegas on Monday.
Oakland claimed Kay off waivers from the Mets on Tuesday.
The Mets placed Kay on outright waivers Friday, Anthony DiComo of MLB.com reports.
Kay was recalled from Triple-A Syracuse on Sunday.
The Mets claimed Kay off waivers from the Cubs on Thursday and optioned him to Triple-A Syracuse.
Kay was designated for assignment Monday.
Kay was optioned to Triple-A Iowa on Friday, Sahadev Sharma of The Athletic reports.
The Cubs recalled Kay from Triple-A Iowa on Tuesday, Meghan Montemurro of the Chicago Tribune reports.
Kay was optioned to Triple-A Iowa on Sunday, Andy Martinez of Marquee Sports Network reports.
The Cubs selected Kay's contract from Triple-A Iowa on Tuesday, Jordan Bastian of MLB.com reports.