The Padres are promoting pitching prospect Adam Mazur, as first reported by FanSided’s Robert Murray (on X). The right-hander is listed as the probable starter for tomorrow evening’s matchup with the Angels.
San Diego selected Mazur in the second round of the 2022 draft. The University of Iowa product worked to a 2.81 ERA in 96 innings during his first professional season. Baseball America ranked the Saint Paul native as the #6 prospect in the organization over the winter. BA’s offseason scouting report credited Mazur with a mid-90s fastball and a plus slider to lead a four-pitch mix. The outlet also lauded his plus-plus (70-grade) control, no surprise for a pitcher who walked a minuscule 4.3% of batters faced a year ago.
The Padres started Mazur at Double-A San Antonio this year. He breezed past the level, working to a 1.95 ERA with a near-27% strikeout rate while issuing only five walks in his first six starts. He’s had a tougher time since being promoted to Triple-A El Paso last month. Over four appearances in the Pacific Coast League, he has been tagged for 15 runs in 19 innings. Mazur has given up four homers in a tough setting for pitchers, but he has fanned 18 opponents (22.8%) against four walks (5.1%).
Despite Mazur’s lack of Triple-A experience, he’ll get his first look at major league hitters in Anaheim. The Padres lost both Joe Musgrove and Yu Darvish to the injured list over the weekend. That left a pair of vacancies behind Michael King, Dylan Cease and Matt Waldron. San Diego recalled right-hander Randy Vásquez for a start against the Royals on Saturday. Mazur will get at least one start and could take a couple turns through the rotation. The Padres don’t have an off day until June 13.
San Diego’s 40-man roster is full. They’ll need to make a corresponding move to select Mazur’s contract, though that’ll likely be a procedural transaction. Glenn Otto and Tucupita Marcano have been on the injured list all season and could be moved to the 60-day IL without impacting their eligibility to return. (Marcano is reportedly under MLB investigation for allegedly placing bets on baseball last year.) The Padres will need to option a pitcher as a corresponding active roster move once they officially call Mazur up.
More must-reads: