The Philadelphia Phillies activated pitcher Jeremy Horst off the paternity leave list on Thursday.

Horst has made 16 relief appearances for the Phillies this season, pitching to a 1-0 record with a 1.06 earned run average.

Philadelphia optioned pitcher Michael Schwimer to Triple-A Lehigh Valley to make room on the roster.

Schwimer went 2-1 with a 4.46 ERA in 35 appearances out of the bullpen this year.