Avilan missed the three games against the Diamondbacks in Arizona after his wife on Monday gave birth to the couple’s first son, Sebastian Andres.
The left-hander has a 3.09 ERA and 2.92 FIP in 47 games this season, with 39 strikeouts and 15 walks in 32 innings. He has held left-handed batters to just .185/.274/.292.
Since the All-Star break, all batters are just 3-for-28 (.107) against Avilan, with 10 strikeouts and five walks.
To make room on the active roster, the Dodgers optioned pitcher Brock Stewart to Triple-A Oklahoma City. He was recalled for bullpen depth to replace Avilan, and pitched 1⅓ innings in relief on Thursday, allowing two runs on three hits while throwing 34 pitches.
The Dodgers bullpen currently has three southpaws, in Avilan, Tony Watson, and Tony Cingrani.