The Marlins optioned Mazur from Triple-A Jacksonville on Monday.
Mazur will give up his spot on the 28-man active roster and in the rotation to Edward Cabrera (elbow), who is slated to start Tuesday's game against the Phillies after being reinstated from the 15-day injured list. After being recalled from Jacksonville on Aug. 28, Mazur went 0-3 with a 4.44 ERA, 1.48 WHIP and 14:8 K:BB in 24.1 innings across five starts.
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Marlins' Adam Mazur: Serviceable results in no-decision
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Mazur didn't factor into the decision Saturday against the Rangers, allowing two runs on five hits and two walks in four innings. He struck out two.
Mazur delivered a decent outing, giving up no extra-base hits, but he was lifted after throwing just 63 pitches. The right-hander has been shaky overall in 2025, posting just one quality start through his six outings. With a 4.80 ERA, 1.50 WHIP and 19:12 K:BB across 30 innings, Mazur will be tough to recommend as a streaming option in the vast majority of fantasy leagues against a formidable Mets lineup next weekend.
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Marlins' Adam Mazur: Handed tough-luck loss
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Mazur (0-4) allowed two unearned runs on one hit and two walks over six innings Sunday, striking out four and taking a loss against Detroit.
Mazur coughed up a pair of runs in the second inning due to two errors by his defense. He then retired 13 of the last 14 batters he faced to deliver his first quality start of the year. He had given up at least four runs in three of his last four starts, but he dropped his season ERA from 6.30 to 4.85 after Sunday's performance. Mazur has posted a 17:10 K:BB through 26 innings and has yet to strike out more than five batters in an outing. He's currently lined up for a road matchup with the Rangers next weekend.
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Marlins' Adam Mazur: Struggles against Nationals
Rotowire
Mazur (0-3) yielded six runs (four earned) on eight hits and three walks over 4.1 innings Tuesday, striking out one and taking a loss against Washington.
Mazur was greeted with a three-run shot by Josh Bell in the first inning. The Marlins then plated a pair of unearned runs in the fourth before Daylen Lile belted a solo homer in the fifth. Mazur had allowed two home runs through three starts at the MLB level this year before Tuesday's poor performance. He's now sporting a 6.30 ERA with a 13:8 K:BB across 20 MLB innings. Mazur is currently projected to face the Tigers at home this weekend, though it's unclear if he'll get another turn in the rotation.
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Marlins' Adam Mazur: Expected to follow opener Sunday
Rotowire
Mazur is expected to work as a bulk reliever behind opening pitcher Tyler Phillips during Sunday's game against the Phillies, Daniel Alvarez-Montes of ElExtraBase.com reports.
Mazur had made a pair of starts for the Marlins upon being recalled from Triple-A Jacksonville on Aug. 28, but Miami appears set to use the right-hander behind an opener with the hope of generating better results from him. Over his three total starts with Miami this season, Mazur has gone 0-2 with a 5.74 ERA, 1.53 WHIP and 12:5 K:BB in 15.2 innings.
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Marlins' Adam Mazur: Returning to Miami
Rotowire
The Marlins will recall Mazur from Triple-A Jacksonville to start Thursday's game against the Mets at Citi Field, Kevin Barral of FishonFirst.com reports.
The 24-year-old righty will fill the void in Miami's rotation left by Janson Junk's (elbow) move to the injured list Wednesday. Mazur gave up four earned runs over 5.2 innings during his lone MLB start of the season against Philadelphia on June 18, and he'll be welcomed back to the big leagues by a Mets offense that has turned in a staggering .849 OPS since the start of August.
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Marlins' Adam Mazur: Expected to make start this week
Rotowire
Mazur has joined the Marlins in Miami and is expected to be recalled from Triple-A Jacksonville to make a start this week during the team's homestand, Craig Mish of the Miami Herald reports.
The Marlins do not have a starting pitcher listed for Wednesday's game against the Phillies, and Mazur would be on six days' rest that day, so he could end up slotting into the rotation for that contest. Mazur has collected a 3.62 ERA and 55:16 K:BB over 59.2 innings this season with Jacksonville. The 24-year-old has a chance to make multiple starts with the big club, although that could depend on when Max Meyer (hip) is ready to return from the injured list.
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Marlins' Adam Mazur: Heads to Miami in six-play trade
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Mazur was traded from the Padres to the Marlins on Tuesday along with Robby Snelling, Graham Pauley and Jay Beshears in exchange for Tanner Scott and Bryan Hoeing, Jeff Passan of ESPN.com reports.
Mazur's minor-league body of work was pretty stellar (2.37 FIP at Double-A in 2024, 3.01 FIP at Double-A in 2023) before he reached the Pacific Coast League and the majors this season. In five Triple-A starts, Mazur has a 7.83 ERA and 1.48 WHIP, which is similar to his 7.49 ERA and 1.81 WHIP in eight big-league starts. He will likely head to Triple-A Jacksonville for the time being, but Mazur should get plenty of chances to carve out a spot in Miami's rotation in the coming years.
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Padres' Adam Mazur: Tosses only 2.2 frames Friday
Rotowire
Mazur allowed one run on two hits and two walks while striking out one batter over 2.2 innings in a no-decision against Baltimore on Friday.
Mazur was called up from Triple-A prior to the contest to make his first big-league appearance since July 9. The rookie walked two batters in the first inning but emerged unscathed on the scoreboard, though he gave up a solo homer to Jordan Westburg in the second and a double to Gunnar Henderson in the third before being pulled with two outs. Mazur tossed only 39 pitches overall in the outing, but that appeared to be due to a short leash rather than any sort of injury. The right-hander has pitched to a poor 7.49 ERA and 1.81 WHIP through eight starts, but he may need to stick in the rotation until Yu Darvish (personal) or Joe Musgrove (elbow) is ready to return.
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Padres' Adam Mazur: Recalled, starting Tuesday
Rotowire
The Padres recalled Mazur from Triple-A El Paso on Monday.
Mazur looked to be on his way out of the San Diego rotation after being optioned to Triple-A after he was lit up for three runs over 4.2 innings in a no-decision this past Friday against the Brewers, but he'll get at least one more start while Yu Darvish's (groin) return from the 15-day injured list will be delayed due to right elbow inflammation, per Dennis Lin of The Athletic. Over his four starts with San Diego this season, the rookie has gone 0-2 with a 7.27 ERA, 1.96 WHIP and 11:16 K:BB in 17.1 innings, numbers that make him an untrustworthy fantasy option.
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Padres' Adam Mazur: Allows three runs in no-decision
Rotowire
Mazur did not factor into the decision in a win over the Brewers on Thursday, allowing three runs on five hits and three walks over 4.2 innings. He struck out three.
Mazur allowed one run in the first inning after surrendering a leadoff double to Brice Turang to open the contest, but the right-hander was able to keep the Brewers' offense at bay over the next three frames as San Diego took a 4-1 lead. The 23-year-old's luck would run out in the fifth, however, when Willy Adames chased him from the game with a two-run shot. Mazur has now failed to make it through five innings in each of his last three starts, allowing 13 runs over that stretch while posting a putrid 9:12 K:BB. He's likely to be pushed out of the rotation as soon as Yu Darvish (groin) returns.
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Padres' Adam Mazur: One more start
Rotowire
Mazur is likely to get one more start Thursday since Yu Darvish will make a rehab start Wednesday, Kevin Acee of The San Diego Union-Tribune reports.
Mazur has struggled with his first taste of the majors, posting a 7.82 ERA and 2.05 WHIP in his three starts while issuing 13 walks in 12.2 innings.
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Padres' Adam Mazur: Hit hard in loss
Rotowire
Mazur (0-1) took the loss Sunday against the Diamondbacks, allowing eight runs on eight hits and three walks while striking out two over three innings.
Mazur was hit hard in just his second MLB start. The Diamondbacks scratched a run against him in the first but did most of their damage in the second when they piled on six runs, which was capped off by a two-run blast by Jake McCarthy. Mazur was able to pitch a clean third but was lifted after allowing a leadoff walk in the fourth and that runner would eventually come around to score. Mazur is known for his elite command of the strike zone but has now walked seven batters over his first nine big-league innings and is showing some early jitters. He'll look to turn things around in a road matchup against the Mets over the weekend.
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Padres' Adam Mazur: Next start coming Sunday
Rotowire
Mazur is scheduled to start Sunday's game against the Diamondbacks at Petco Park, Jeff Sanders of The San Diego Union-Tribune reports.
With Joe Musgrove (elbow) and Yu Darvish (groin) both landing on the injured list over the weekend, Randy Vasquez and Mazur were summoned from Triple-A El Paso to fill the two openings in the rotation. Mazur made his first MLB start Tuesday and held his own in a no-decision against the Angels, covering six innings and striking out two while allowing one run on two hits and four walks. The 23-year-old righty should stick around with the big club until the Friars get at least one of Musgrove or Darvish back from the IL.
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Padres' Adam Mazur: Logs quality start in debut
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Mazur didn't factor into the decision in Tuesday's 4-2 loss to the Angels, allowing one run on two hits and four walks while striking out two over six innings.
Mazur didn't have his best command Tuesday but was able to limit the damage against him by inducing plenty of weak contact. He allowed four hard-hit balls on the night, and both hits against him went for singles, with one of those being an RBI knock by Luis Rengifo in the third. Aside from the walks, it was an impressive showing from the 23-year-old, who needed only 77 pitches to get through six frames. Mazur figures to get at least another turn through the rotation while the team deals with some injuries and lines up to take the mound over the weekend against the Diamondbacks.
