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Seth Beer, Mark Mathias Sign With Atlantic League’s Long Island Ducks

By Steve Adams | April 9, 2025 at 4:05pm CDT

Former big leaguers Seth Beer and Mark Mathias signed with the Long Island Ducks of the Atlantic League this week. The team announced both signings.

Beer, 28, was a first-round pick by the 2018 Astros who wound up being one of four players traded to the D-backs in the last-minute deadline blockbuster that brought Zack Greinke to Houston in 2019. The first baseman/designated hitter appeared in parts of two seasons with Arizona, hitting a combined .208/.294/.292 in a small sample of 136 plate appearances from 2021-22.

Though Beer hasn’t found much success in the big leagues, he’s a fairly accomplished hitter in Triple-A, where he’s slashed .262/.365/.463 with 40 homers across 1093 plate appearances in parts of four seasons. He’s walked at an above-average 9.3% clip there and has kept his strikeouts to a manageable 18.8% rate. The lefty-swinging slugger spent the 2024 season in the Pirates system, where he hit .277/.354/.431 in a combined 99 games between Double-A and Triple-A.

Mathias, 30, has a good bit more major league service time under his belt — more than two years’ worth — but much of it has been spent on the injured list. He’s suited up for the Brewers, Pirates, Rangers and Giants in a utility capacity, hitting a combined .246/.317/.391 in 199 plate appearances spread over 73 games. Injuries have been a major detriment to the former third-round pick’s career. He’s undergone two shoulder surgeries: one in college and another in 2021 to repair a torn labrum. That second procedure cost him the entire 2021 season.

As with Beer, Mathias has a strong Triple-A track record but more modest big league numbers in scattershot playing time. He’s a .288/.383/.454 hitter in three Triple-A campaigns, during which he’s tallied 919 plate appearances. Mathias has walked in an impressive 12.8% of his Triple-A plate appearances against a 21.5% strikeout rate. He’s spent the bulk of his pro career at second base but has more than 1000 innings of work at third base in 200-plus innings at shortstop and in the outfield corners.

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Transactions Mark Mathias Seth Beer

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View Comments (19)
Post a Comment

19 Comments

  1. DarkSide830

    3 months ago

    Real who’s-who of ex top prospects with the Ducks this year.

    Reply
  2. Mondesi’s Cannon

    3 months ago

    Seth Beer is lager than life…

    10
    Reply
    • Ham Fighter

      3 months ago

      Seth beer plays in a beer league

      1
      Reply
  3. Jacksson13

    3 months ago

    The Long Island Ducks will have BEER !!

    6
    Reply
  4. Jacksson13

    3 months ago

    Mathias was never what he was QUACKED up to be !!

    4
    Reply
    • Acoss1331

      3 months ago

      Ducks on the pond!

      That baseball phrase hits hard for the Ducks!

      Reply
  5. Thomar

    3 months ago

    If you got the time, we got the Beer

    1
    Reply
  6. bag o ballz

    3 months ago

    Beer’s numbers aren’t that great in AAA – you have to remember that Arizona is in the PCL that inflates hitter’s numbers. he underperformed at the major league level but not by much, someone with a .268 in the PCL you are probably looking at an expected .210 or so

    Reply
    • Domingo111

      3 months ago

      Yes. Also even for PCL Standards that Arizona park is an extreme hitters park. Beer has shown decent plate discipline stats for for a DH he simply doesn’t hit the ball hard enough. He had one year with a 110 max ev but the other years it was like 107-108. That is not enough, typically good 1b types are above 112 or so.

      In college he was a very big prospect but I think his power was more feel to hit and good natural lift combined with metal bats than real DH/1b type of power.

      1
      Reply
  7. Smelly_Cobb

    3 months ago

    I was there when Seth hit a walkoff piss missile on AZ’s opening day in 2022. I believe it was National Beer Day as well.

    5
    Reply
    • numberoneslayerfan

      3 months ago

      it was national beer day

      2
      Reply
  8. 'Tang It

    3 months ago

    Does anyone else actually play in the league? The only team I ever see referenced is long Island.

    Reply
    • Longinus

      3 months ago

      The Ducks get more of the high profile players than any other team in the league, but they’ve had many real names over the years. I worked for the (now defunct) Bridgeport Bluefish back when they had Juan Gonzalez and John Rocker, for example!

      2
      Reply
  9. Old York

    3 months ago

    They’re on a 6 game losing streak so they need the help.

    Reply
  10. stubby66

    3 months ago

    Wow Josh James on that team too. Didn’t realize he fell that far. Surprised no one has picked him up .

    1
    Reply
  11. Rsox

    3 months ago

    Seth Beer League…

    1
    Reply
  12. This one belongs to the Reds

    3 months ago

    I told them I thought that idea was a little daffy, but they did it anyway.

    Reply
  13. Monkey’s Uncle

    3 months ago

    “Hooray, Beer!”

    Reply
  14. padam

    3 months ago

    He’s on tap.

    Reply

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