Slaten allowed one hit and zero walks in a scoreless ninth inning to pick up his second save of the season in Sunday's season finale against Tampa Bay.

Red Sox manager Alex Cora said Sunday that he will "mix and match" at closer with Slaten and Chris Martin following the season-ending injury to Kenley Jansen (shoulder), Gabrielle Starr of the Boston Herald reports.

Slaten struck out one over a scoreless inning in the second game of Monday's doubleheader against Toronto.

The Red Sox activated Slaten (elbow) from the 15-day injured list Monday, Jen McCaffrey of The Athletic reports.

Slaten threw a bullpen session prior to Sunday's game against the Diamondbacks, Jen McCaffrey of The Athletic reports.

Boston manager Alex Cora was non-committal Saturday when asked if Slaten (elbow) will be activated following one rehab outing, MLB.com reports.

Slaten (elbow) allowed one run on one hit and one walk while striking out one over a third of an inning for Double-A Portland on Friday.

Slaten (elbow) is expected to begin a rehab assignment Friday, Chris Cotillo of MassLive.com reports.

Slaten (elbow) is scheduled to throw a bullpen session Monday and start a minor-league rehab assignment shortly after, Ian Browne of MLB.com reports.

Slaten (elbow) has been cleared to throw up to 120 feet, Pete Abraham of The Boston Globe reports.