Mantiply has appeared in 35 games this season and has a 1.89 ERA; batters are hitting .228 against the lefty, a .285 slugging percentage, and .537 OPS. He also has a career-high 26.8% strikeout rate this season.
Arizona signed the 31-year-old as a Minor League free agent in January 2020, after he had been with the Tigers, Yankees, and Reds organizations and undergoing Tommy John surgery.
Joe Mantiply holds the MLB record for most consecutive appearances by a left-handed pitcher without a walk with 33. He also had 17 game scoreless streak.