Mack went 2-for-4 with an RBI in Tuesday's loss to the Orioles.
A third-inning single by the rookie catcher brought home Kyle Stowers, giving Mack his first hit and RBI in MLB, and he added another knock in the eighth. The 23-year-old top prospect will get a long look in the starting role from the Marlins, with Liam Hicks -- who got the start at first base Tuesday before taking over behind the plate for the top of the ninth after Mack was lifted for a pinch runner -- seeing more of his playing time at 1B and DH as a result.
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Marlins' Joe Mack: Hitless in MLB debut
Rotowire
Mack went 0-for-3 with a strikeout in Monday's loss to the Phillies.
Making his big-league debut and batting seventh, Mack was fanned by Aaron Nola in the fifth inning, between a groundout and a pop-up in foul territory. On the bright side, the rookie catcher guided Janson Junk to a strong outing in a 1-0 loss, and it's his defensive work rather than his bat that the Marlins are counting on to be an upgrade over Agustin Ramirez. While he'll split time behind the plate with Liam Hicks, Mack will get a long runway to establish himself at the top level after slashing .251/.336/.447 over 122 career games in Triple-A with 21 homers.
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Marlins' Joe Mack: Set to join major-league roster
Rotowire
The Marlins are expected to call up Mack from Triple-A Jacksonville on Monday, Craig Mish of FanDuel Sports Network Florida reports.
Mack will get a chance to make his MLB debut during Monday's series finale against the Phillies. The 23-year-old catcher is considered one of Miami's top prospects, and he's slashed .244/.388/.378 with three home runs and one stolen base over 103 plate appearances with Jacksonville this season. Agustin Ramirez is set to be sent down to Triple-A Jacksonville in a corresponding move, so Mack will share reps behind the plate with Liam Hicks for the time being.
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Marlins' Joe Mack: Day-to-day with stiff neck
Rotowire
Marlins manager Clayton McCullough said Monday that Mack is dealing with a stiff neck but should return to the Grapefruit League lineup in a couple days, Christina De Nicola of MLB.com reports.
McCullough noted that if it were the regular season, Mack would most likely play through the injury. Mack has appeared in seven games this spring for Miami, going 3-for-18 with one home run at the dish. He's third on the Marlins' catching depth chart and will begin the season at Triple-A Jacksonville, barring an injury to Agustin Ramirez or Liam Hicks.
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Marlins' Joe Mack: Having huge finish to year
Rotowire
Mack went 1-for-4 with a walk, a two-run home run and a second run scored for Triple-A Jacksonville on Wednesday.
The 22-year-old backstop walked it off for the Jumbo Shrimp in the bottom of the 10th inning, giving Mack his 20th homer of the year between Double-A and Triple-A. He's gone yard in four straight games, and over his last 12 contests for Jacksonville he's slashing .325/.383/.950 with 10 of his 13 hits (two doubles, a triple and seven homers) going for extra bases. The presence of Agustin Ramirez ahead of him on the organizational depth chart complicates his timeline, but Mack appears ready to make his big-league debut in 2026, and he could be competing for a 26-man roster spot in spring training.
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Marlins' Joe Mack: Waking up at Triple-A
Rotowire
Mack went 4-for-5 with a solo home run, two additional runs scored and a stolen base Friday for Triple-A Jacksonville.
His contributions didn't end with his bat -- the catcher also guided four Jumbo Shrimp pitchers to a combined no-hitter and 14 strikeouts over nine innings. Mack appears to be finding his groove again after a month-long slump from late May into June that saw him slash .133/.216/.173 with a 29.5 percent strikeout rate in 88 plate appearances. Over his last four games, he's gone 9-for-18 with a double and two homers. With Agustin Ramirez leading a trio of backstops on the big-league roster, the Marlins have the luxury of not rushing Mack to the majors, but he could be ready to contribute in Miami later on this season.
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Marlins' Joe Mack: Overcomes hamstring strain
Rotowire
Mack (hamstring) has gone 3-for-15 with 10 walks, two RBI and two runs in six games since being reinstated from Single-A Jupiter's 7-day injured list July 22.
Mack was on the shelf for nearly two months due to the hamstring strain before returning to action for the Marlins' Single-A affiliate. The 19-year-old catching prospect has shown a hyper-patient approach at the plate since being activated, and his combination of high on-base percentages and burgeoning pop could make him an interesting fantasy option down the road, especially if he's able to stick behind the plate.
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Marlins' Joe Mack: Dealing with hamstring strain
Rotowire
Mack is dealing with a hamstring strain and is expected to miss approximately 4-6 weeks, Daniel Alvarez-Montes of El Extrabase reports.
Mack has appeared in just four games this year while battling a hamstring issue, and he'll focus on his rehab process after being diagnosed with a strain. The 19-year-old will presumably attempt to return to game action sometime in late July or early August.
