PHILADELPHIA (CBS) -- The Phillies placed left-handed reliever José Alvarado on the restricted list Monday, saying he left the club to deal with a personal matter. 

Right-handed pitcher Michael Mercado was recalled from Triple A Lehigh Valley to fill Alvarado's spot on the 26-man roster.

The 29-year-old Alvarado made 56 relief appearances in the 2024 season, converting 13 of his 16 save opportunities with a 4.30 ERA with 52 strikeouts to 25 walks.

Alvarado has held the 65 batters he's faced to a .131/.185/.246 (.431 OPS) slash line, walking only one player since April 13 -- a left-handed batter.

The lefty reliever has had an up-and-down season and has mostly struggled since the All-Star break. It's unclear at this time when he will return to the Phillies.

Alvarado joined the Phillies in a three-team trade with the Tampa Bay Rays and Los Angeles Dodgers on Dec. 29, 2020. The 29-year-old was first signed by Tampa Bay as a free agent on March 13, 2012.