Offishial News: Adam Mazur gets his second shot in the majors

Tonight, we will be getting our first glimpse of Adam Mazur pitching for the Miami Marlins in a regular season game.

Mazur has maintained his prospect eligibility despite making eight starts for the San Diego Padres in 2024. There's no sugarcoating it: that experience went poorly for him (7.49 ERA and 6.23 FIP while averaging barely four innings per outing). The Padres shipped him to Miami as part of a six-player trade deadline deal.

The slender right-hander had uncharacteristic control issues during his previous MLB stint. Mazur has cleaned that up with the Jacksonville Jumbo Shrimp, walking only 5.6% of batters faced in 97 ⅔ innings pitched since the trade. New in 2025, he's using an occasional sweeper to complement his signature slider.

The corresponding move to get Mazur on the Marlins active roster is expected to be optioning either Freddy Tarnok or Valente Bellozo.

Down on the farm, Triple-A Jacksonville won, 6-4. Jakob Marsee had the first multi-homer game of his minor league career. Jacob Berry hit the decisive three-run blast in the top of the ninth. Double-A Pensacola lost, 4-3. High-A Beloit lost, 5-4. Low-A Jupiter won, 5-3. Andres Valor doubled and homered. Deyvison De Los Santos continued his rehab assignment by going 1-for-2 with two walks. FCL Marlins won, 7-2. Perfect day at the plate for Yiddi Cappe (3-3, 2 HR, BB) to begin his own rehab assignment. DSL Marlins won, 7-6. DSL Miami won, 9-5, and lost, 4-3. Luis Arana is now 45 plate appearances into his MiLB career without a single strikeout.

More Marlins news and content below:

🔷 Several pitching prospects received promotions this week. Josh White and Adam Laskey got bumped up from Double-A to Triple-A. Selected in the fifth round of the 2022 MLB Draft, White emerged as a dominant reliever during the second half of last season and has only gotten better here in 2025. He's been striking out nearly half of all batters faced while posting a 1.19 ERA. Filling their shoes in Pensacola, Thomas White (no relation to Josh) and Ike Buxton were promoted from Beloit. The 20-year-old White is the consensus top prospect in Miami's farm system. He's scheduled to make his Blue Wahoos debut on Friday.

🔷 In a corresponding move, the Marlins released Woo-Suk Go. The Korean right-hander was salary-dumped to Miami in last year's Luis Arraez trade. Fun fact: Go is the team's highest-paid reliever in 2025 at $2.25 million. In 55 ⅓ total innings as a Marlins farmhand, Go pitched to a 6.34 ERA and 5.39 FIP.

🔷 Clayton McCullough is an All-Star! Dave Roberts will be managing the National League team as a reward for winning the 2024 NL pennant and he has invited McCullough to be on his staff. McCullough spent the last four seasons serving as Roberts' first base coach in LA.

🔷 On this day in 2010, Giancarlo Stanton clubbed his first career home run. Stanton is now Major League Baseball's active leader with 429 long balls, though he has not added to that total yet this season.

🔷 Elsewhere around baseball, the Washington Nationals have lost 10 straight games. The most recent of those was particularly ugly, allowing seven home runs to the MLB-worst Colorado Rockies. The New York Yankees have been held scoreless three days in a row. Cal Raleigh's league-leading 27th homer was a grand slam.

🔷 Today's MLB game: it's the third installment of a four-game set between the Marlins (probable starter RHP Adam Mazur) and the Phillies (LHP Ranger Suárez). The Marlins have a 39.5% chance to win, per FanGraphs. Full organizational schedule below.

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