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DraftKings MLB Grand Slam Payout Picks, Predictions for Monday 5/18/26

DraftKings MLB Grand Slam Payout Picks, Predictions for Monday 5/18/26

Published:

By: Zach Thompson

DraftKings has a new promotion in May. It’s the MLB Grand Slam Payout.

The concept is simple. Opt in and get an MLB Grand Slam Payout token. Use that token on a single wager or for a parlay on a player to hit a home run, and if that home run ends up being a grand slam, receive a share of $250,000 in bonus bets — or more!

Harrison Bader smashed a grand slam on Sunday in Sacramento to deliver $1 million in bonus bets to the bettors who placed their token on him. This Monday, the total is reset to $250,000 in bonus bets on the board for the 14 games on the scoreboard.

Let’s dive in and break down some picks.

MLB Grand Slam Payout Picks

Seiya Suzuki, Cubs

The wind will be blowing out on a warm night at Wrigley Field, so this should be a great spot for offense. The Cubs host the Brewers in a division rivalry with Brandon Sproat taking on Shota Imanaga. Sproat has allowed eight homers in his six games this season, four to righties and four to lefties. Righties have a .197 ISO and .349 wOBA off Sproat this season with a 9.6% barrel rate.

Suzuki has seven homers in his first 33 games after getting a late start to the season. Six of his seven homers have come off righties like Sproat, and he has a .286 average and .409 wOBA in his 16 games at Wrigley. Suzuki usually hits fifth in the order, which is a good spot to come up with the bases loaded, potentially. He hasn’t homered in eight games, but coming back to Wrigley with the wind blowing out to left could be a great spot to jumpstart his power production with a grand slam Monday night.

Matt McLain, Reds

In May, only the Giants have more plate appearances with the bases loaded than the Reds. As a team, they have come up 27 times with the sacks filled, and Tyler Stephenson has the team’s only grand slam of the month. They’re in a good spot in one of the early games on Monday night with temperatures near 90 degrees in Philadelphia and the wind blowing out at Citizens Bank Park. Andrew Painter will start for the Phillies, and the young righty has allowed seven homers in his eight games, including four in his four games (18 innings) at home. In a reverse-split, righties have five of those seven homers with a .339 average, a .452 wOBA, a .305 ISO, and a 14.9% barrel rate.

While righties Spencer Steer and Sal Stewart are solid options to consider as well, McLain will likely bring more value from lower in the lineup and comes in with better recent numbers. McLain only has five homers this season, but three of those have come in his last 11 games. He is hitting .324 with a .459 wOBA over that span with a 51.5% hard-hit rate and a 6.1% barrel rate. He has multiple hard-hit batted ball events in each of his last five games with an 80% hard-hit rate. The Reds are hopeful that the 26-year-old is finally having his breakout, and if he comes up with the bases loaded on Monday, he has a strong chance of going yard.


How to Play MLB Grand Slam Payout

  1. Opt in to receive your MLB Grand Slam Payout token in the Promotions page
  2. Place a Single, Parlay, or SGP bet on a player to hit a home run and if their home run is a grand slam, receive a share of $250,000 in Bonus Bets! (minimum $5 bet, maximum three legs for a parlay)
  3. If the player in your qualifying bet hits a grand slam you’ll win a share of $250,000 in Bonus Bets.
  4. If no grand slams are hit, the bonus prize pool will carry over to the next day the Promotion is offered.

For more information on this promo, click here!

I am a promoter at DraftKings and am also an avid fan and user (my username is z.thompson) and may sometimes play on my personal account in the games that I offer advice on. Although I have expressed my personal view on the games and strategies above, they do not necessarily reflect the view(s) of DraftKings and do not constitute a representation that any particular strategy will guarantee success. All customers should use their own skills and judgment in building lineups. I may also deploy different players and strategies than what I recommend above. I am not an employee of DraftKings and do not have access to any non-public information.