The Boston Red Sox reinstated All-Star closer Kenley Jansen from the COVID-19 injured list on Saturday.
Jansen, 35, hasn't pitched since Sept. 12. He is 3-6 with a 3.63 ERA and 29 saves in 51 games.
The right-hander leads all active pitchers with 420 saves across 14 seasons with the Los Angeles Dodgers (2010-21), Atlanta Braves (2022) and Red Sox.
Boston optioned right-hander Zack Weiss to Triple-A Worcester in a corresponding move.
Weiss, 31, posted a 2.08 ERA and no decisions in six relief appearances for the Red Sox.