Rumbelow was released by the Mets on Thursday, Michael Mayer of Metsmerizedonline.com reports.
Rumbelow signed a minor-league deal with the Mets.
Rumbelow was released by the Mariners on Wednesday, Ryan Divish of The Seattle Times reports.
Rumbelow cleared waivers Wednesday and was outrighted to Triple-A Tacoma.
Rumbelow was designated for assignment by the Mariners on Friday.
Rumbelow allowed a hit over a scoreless ninth inning in an exhibition loss to the Padres on Tuesday but recorded three strikeouts.
Rumbelow was recalled from Double-A Arkansas on Tuesday.
Rumbelow was optioned to Double-A Arkansas on Tuesday, Ryan Divish of The Seattle Times reports.
Rumbelow was called up from Triple-A Tacoma on Wednesday.
Rumbelow was optioned back to Triple-A Tacoma on Sunday.