12:05pm: Mazur underwent a UCL reconstruction (Tommy John surgery) and had an internal brace installed, reports De Nicola. The estimated timetable for his return from that hybrid procedure is 13 to 14 months.
9:00am: Marlins righty Adam Mazur will undergo elbow surgery today and miss the entire 2026 season as a result, MLB.com’s Christina De Nicola reports. Mazur wasn’t locked into Miami’s rotation but was among the top depth options in the event of an injury to one of Sandy Alcantara, Eury Pérez, Chris Paddack or likely fourth and fifth starters Max Meyer and Braxton Garrett. It’s not yet clear which type of procedure he’ll require. Mazur recently reported elbow discomfort to the team and was quickly sent for an evaluation with renowned surgeon Keith Meister.
Mazur, 24, came to the Marlins alongside infielder Graham Pauley, top pitching prospect Robby Snelling and minor league infielder Jay Beshears in the 2024 trade that sent lefty Tanner Scott and righty Bryan Hoeing to the Padres. He’s a 2022 second-rounder who posted big numbers up through the Double-A level but has run into some trouble at both the Triple-A level (5.03 ERA, 168 1/3 innings) and in more limited major league work (6.22 ERA, 63 2/3 innings).
In 2025, Mazur split the season between Triple-A Jacksonville and Miami, tossing 107 1/3 innings with a 4.36 ERA at the former and 30 innings with a 4.80 ERA with the latter. He turned in solid strikeout and walk rates in Jacksonville but was far too homer-prone to keep his ERA down. Homers were less of an issue in his six big league starts, but he recorded a bottom-of-the-barrel 13.7% strikeout rate in his 30 MLB frames.
Having traded Edward Cabrera to the Cubs and Ryan Weathers to the Yankees, the Marlins entered camp with Alcantara, Pérez and free agent signee Paddack locked into rotation spots. Meyer and Garrett have both pitched only four official spring innings, but they’re both former top-10 picks and top prospects who have experienced success in the majors previously.
Garrett notched a 3.63 ERA in 247 2/3 innings from 2022-23 before a 2024 UCL surgery wiped out his entire 2025 season. Meyer has a 5.29 ERA in 25 career starts but has had big starts to his season in both 2024 and 2025. Miami optioned him in 2024 despite that big start, keeping him down for months and leaving Meyer six days shy of the service time he’d have needed to be a free agent following the 2028 season instead of the 2029 season. In 2025, a hip injury surfaced and eventually required season-ending surgery.
Depth options on the 40-man roster include swingman Janson Junk (4.17 ERA, 110 innings in 2025), Ryan Gusto (acquired from the Astros in last summer’s Jesús Sánchez trade), Bradley Blalock (acquired from the Rockies in January) and 2020 second-rounder Dax Fulton (healthy again after multiple injuries, including a June 2023 internal brace procedure). The aforementioned Snelling and fellow left-hander Thomas White are the two most notable rotation arms in waiting; both rank among baseball’s top 100 prospects, but neither has needed to be added to the 40-man roster just yet. That’ll very likely change in ’26, as both are considered nearly MLB-ready. White is the more touted of the two but has a bit less experience in the upper minors, given his status as a 2024 draftee compared to Snelling, a 2023 draftee.
Since Mazur is on the 40-man roster, has big league experience and was in major league camp at the time of injury, he’ll be placed on the major league injured list. If and when Miami needs an additional 40-man roster spot, he’ll be placed on the 60-day IL. Mazur will accrue a full year of service time and retain the lone minor league option year he has remaining. Miami will be able to control him via arbitration through at least the 2031 season.
That stinks big time
Horrible for Mazur and the Marlins. Thankfully for Miami they still have lots of pitching depth, but this isn’t good at all for anyone.
Another elbow injury. This spring there doesn’t seem to be nearly as many as there were this time last year or the previous four or five spring trainings. It still seems like one every three or four days but not one a day like it had been or whatever the frequency was so hopefully this elbow injury epidemic is on a downward trend.
I took a quick look so I could be missing some, but there does seem to be an increasing trend of pitchers reported with *new* elbow or shoulder issues during spring training. Below is a the year-by-year list for the last 7 years:
2026 – Schwellenbch, Waldrep, H. Greene, P. Lopez, Wicks, Hodge, Stock, Selvidge, Mazur.
2025 – R. Lopez, Cole, Montas, Hodge, Bradford, G. Rodriguez, Weathers, Tiedeman.
2024 – S. Strider, Giolito, Brash, Romano, Ynoa.
2023 – Strasburg, McClanahan, Taillon, Heaney, Urquidy, Javier
2022 – Sale, Doolittle, L. Castillo
2021 – N. Anderson, J. Leclerc.
2020 – Syndergaard, Sale, Paxton.
Maybe I haven’t been paying attention this year as good as I thought but it seemed like there was fewer. I wouldn’t even know where to begin finding all these names. It just seemed like there was less. We’re only 11 days into march and already got a pretty good list. This isn’t even counting the rest of spring training and all the injuries that are going to pile up during the year. I feel for these guys somewhat but this is ridiculous.
Yikes, he looked good in a few outings for the Padres couple of years ago. Wishing Mazur a speedy recovery
Marlins played their axx off last season, and felt like a team that was poised to win this season.
Every article I read since they traded Cabrera and Weathers, I get the impression they are back at beginning of a rebuild.
Its a total dissappointment.
I do like the Nats this season, more and more as spring rolls on. I think they can clip the Marlins and the Braves for third place in the NL East.
I’ve been watching this team since they came into existence and except for a few years here and there I don’t think they would know what to do if they couldn’t rebuild. They have won a couple World Series in their time and immediately dismantled the team and started a rebuild. I don’t mean this literally every year, year in and year out but sometimes that’s what it seems.
Lost me at the end there but I remember the Marlins winning with the old man Jack McKeon. I had a look at that roster on BR, overacheiving team in some sense.
Josh Beckett was the MVP of that team as I recall it. I remember him in the WS that year, I watched those games on TV, I was living in Chicago at the time, I remember him winning game 6. CG SO to win the WS. That was epic.
Yeah, I think that was back in ‘03? The only thing I remember about it now is watching the last game on TV and seeing the Marlins beat the Yankees to win it all. It didn’t even seem real. Getting back to my comment I think it did come out a bit confusing. I meant it seems the Marlins are in a perpetual state of rebuild except for a handful of years in their existence.
I was afraid it’d be Tommy John surgery.