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Diamondbacks Designate Joe Mantiply For Assignment

By Darragh McDonald | May 30, 2025 at 5:35pm CDT

The Diamondbacks announced a series of roster moves today, most of which were previously reported. They have selected right-hander Jeff Brigham and signed infielder Ildemaro Vargas. To open active roster spots for those two, infielder Jordan Lawlar and right-hander Kevin Ginkel have been optioned to Triple-A Reno. The club had one open 40-man roster spot but opened a second by designating left-hander Joe Mantiply for assignment.

Mantiply, 34, has fallen on hards time here in 2025 after a strong performance in previous seasons. From 2021 to 2024, he logged 198 1/3 innings with the Diamondbacks, allowing 3.63 earned runs per nine. His 22% strikeout rate in that time was around average but he only walked 6% of batters faced and kept 51.9% of balls in play on the ground. He racked up three saves and 50 holds in that span.

But this year, he allowed 13 earned runs in his first 7 1/3 innings. He was optioned down to Reno in mid-April while sporting an ERA of 15.95. He was recalled briefly a couple of weeks ago and allowed four more earned runs in 2 1/3 innings before getting optioned down again. He currently has an ugly 15.83 ERA on the year, though in a small sample of 9 2/3 innings.

There’s surely some bad luck in there, with his .512 batting average on balls in play and 56.5% strand rate both far to the unfortunate side of things. However, his strikeout rate has also dropped to 13.8% this year and he’s only been getting grounders at a 43.2% clip.

Those struggles have apparently been enough for him to lose his 40-man spot. He now heads into DFA limbo, which can last as long as a week. The waiver process takes 48 hours, so the Snakes could spend up to five days exploring trade interest.

Other clubs might be willing to look past this year’s struggles but MLB teams are generally loath to take on money via midseason pickups, even relatively small amounts. Joel Payamps, like Mantiply, is a pitcher with some recent success but having a bad year. He recently passed through waivers, with no club willing to take on what remains of his $2.995MM salary.

Mantiply is making $1.7MM this year, barely half of what Payamps is making. He is also left-handed and can be optioned to the minors, whereas Payamps is a righty and out of options. On the other hand, Mantiply is three years older. The next few days will tell if Mantiply can find a club willing to take him on.

If he goes unclaimed, he will likely stick with the D’Backs as non-roster depth. Players with at least three years of major league service time have the right to reject an outright assignment and elect free agency. However, players with less than five years of service have to forfeit any remaining salary in order to exercise that right. Mantiply is shy of the five-year mark and would therefore probably accept an outright assignment, in order to keep that salary coming to him.

Photo courtesy of John Hefti, Imagn Images

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Arizona Diamondbacks Transactions Ildemaro Vargas Jeff Brigham Joe Mantiply Jordan Lawlar Kevin Ginkel

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View Comments (21)
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21 Comments

  1. LFGMets (Metsin7) #BannedAgain&Again&AgainFireStearns

    2 months ago

    Mets please go after Mantiply, he is the perfect rebound candidate. Great stuff

    Reply
    • ohyeadam

      2 months ago

      Nah. Twins need some lefty help

      Reply
    • MLB Top 100 Commenter

      2 months ago

      Funny that the article did not mention that Mantiply was an All-Star in 2022.

      2
      Reply
      • Lets Go DBacks

        2 months ago

        What is even more funnier is that he made his debut in 2016 and still has accumulated less than 5 years of service time.
        Then again, that isn’t funny at all.

        What is funny is that Mantiply’s walk up song is (or was?) Burning Man and that he got torched. Then again, it is sad to think that is funny.

        All respect to Mantiply, I hope he finds renewed success soon either in the desert or somewhere else.

        Reply
      • Lets Go DBacks

        2 months ago

        What is actually really funny, now I remember, is that Mantiply started in the World Series because the Diamondbacks had just 3 starters (Gallen, Kelly and Pfaadt). That is also sad in some kind of way, but still brings a smile to my face when I think of it.

        Reply
        • MLB Top 100 Commenter

          2 months ago

          How many guys have been both an all-star middle reliever and a World Series starter?

          2
          Reply
        • El Kabong

          2 months ago

          The Diamondbacks deserved credit for cutting Bumgarner when they did. Had they kept running him out, they might not have made the postseason.

          Reply
      • Boston’s Alignment

        2 months ago

        Absolutely hilarious. 🤣

        Reply
    • Boston’s Alignment

      2 months ago

      He’s terrible, which is why he’s getting whacked from the Snakes roster. Try not to react to EVERYTHING.

      Reply
  2. TheMichigan

    2 months ago

    It’s joever

    It was him and Schrieber (sic) that always surprised me how well they did post tigers stints

    1
    Reply
  3. Dumpster Divin Theo

    2 months ago

    Addition by Subtraction, or Division by Mantiply?

    6
    Reply
    • Busty Poser

      2 months ago

      Division by Manyiplycation.

      2
      Reply
  4. Rsox

    2 months ago

    17 earned runs allowed in 9.2 innings would be bad numbers for a starter, let alone a reliever. I think we need to get rid of the 3 batter minimum rule and go back to the days of the LOOGY

    2
    Reply
    • Monkey’s Uncle

      2 months ago

      Manfred saved a whole 2 minutes or so off of game times with that stupid 3 batter rule. But he also put a lot of players like Mantiply out of business.

      Reply
      • Boston’s Alignment

        2 months ago

        Aww, who hurt you Mr Monkey? You do realize the amount of wasted time watching commercials while managers change pitchers.

        Reply
  5. SweetBabyRayKingsThickThighs

    2 months ago

    Now do Ginkel

    1
    Reply
  6. sufferforsnakes

    2 months ago

    “If he goes unclaimed, he will likely stick with the D’Backs as non-roster depth.”

    Please, please, please, somebody claim him.

    1
    Reply
    • Steinbrenner2728

      2 months ago

      Cleveland should get him…

      1
      Reply
    • Acoss1331

      2 months ago

      White Sox will take him, that’s what they do!

      Reply
  7. Monkey’s Uncle

    2 months ago

    Go forth, become fruitful, and Mantiply!

    5
    Reply
    • Acoss1331

      2 months ago

      Mantiply sounds like a Pokémon lol

      2
      Reply

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