Welcome to tonight’s MLB best bets for this slate of MLB action here at Fantasy Alarm on this Friday, May 30th, 2025! As we hit the end of the week, I now sit at 8-5-1 overall with a little over a unit of bankroll in the green. I realize it’s not been a flashy period, but I will say this, we're still up and over the course of a season, these kinds of weeks make a difference. Full slate on this Friday of all 30 teams in action, so check out my wagers below as there are many!

In this MLB Best Bets Today article, you will find a wide array of choices from some Money Lines to game totals and, on occasion, some player props! Check out the rationale and if you agree with me, make sure to tail and good luck!

Now, let's dive into my expert MLB Best Bets today!

  • Season Record: 107-78-5
  • Bankroll: +14.3 units

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MLB Picks, Predictions & Best Bets Today, 5/30

Cardinals vs. Rangers Predictions

It’s a Friday night matchup between these interleague opponents as the Cardinals travel down to Texas to take on the Rangers for a weekend series! One team has been a surprise while the other has disappointed so far this season, and you know which team is which. Lots to dig into in this game so let’s go ahead and dive into it. 

Matthew Liberatore will start tonight for the Cardinals, and that’s a great thing for them as he’s been nails in the month of May. Over 28.1 innings, he’s allowed just 7 earned runs, 24 hits, and 6 walks, which makes the ERA and WHIP look mighty nice. I think he will keep rolling today too, as the Rangers' offense has a BABIP of .261 against lefties and is striking out 27.5% of the time! The K-rate is the 3rd highest in MLB right now, and to pile on more, their ISO (isolated power) number sits at .118, the 7th lowest number in MLB against the southpaws. This should set up Liberatore well tonight as he aims to go over 4.5 strikeouts, something he has done in 5 starts this season. 

In addition to the Cardinals' pitching, we have Jack Leiter going on the opposite side, and he’s having a May to forget right now. His ERA has ballooned to 5.2 over 27.2 innings of work, and he’s been walking way too many batters at 16 to his 17 strikeouts. The Cardinals are a disciplined team that strikes out only 19.2% of the time against righties, so it will be a long night for the Rangers' rookie pitcher. The Rangers have also lost 8 of their last 10 games and are in a mega slump overall, so give me the Cardinals to win this game tonight on the Money Line. 

Pick: Matthew Liberatore (STL) Over 4.5 Strikeouts (-105 on DraftKings)

Pick: Cardinals Money Line (-130 on DraftKings)

 

 

 

Giants vs. Marlins Predictions

Whatever Cal Quantrill has been trying to sell all of us over his last 2 starts, I am not buying! He pitched well against the Angels and Rays recently, but that does not deter me one bit; I know this is a bad pitcher. His overall season ERA is 6.09, and WHIP is 1.49, and he’s allowed 51 hits over 44.1 innings pitched, and tonight he regresses back to the mean against the Giants. 

Quantrill has been destroyed by right-handed hitting this season, allowing an average of .384 and an OPS of 1.035 over the course of 86 at-bats. The Giants have plenty of right-handed hitters to take him on tonight, from Heliot Ramos to Matt Chapman and Willy Adames! Of that group, Chapman is the one swinging the pole best over the past 7 days, hitting .286 with a pair of doubles and 3 runs scored. He is projected to hit 5th tonight, which is a great spot for a hits/runs/RBIs prop as he should go up to the plate with base runners for the majority of his at-bats. Give me the over 1.5 on that prop, and let’s move on to the next wager. 

This one, of course, targets Quantrill overall as the Giants' team total sits at 4.5 runs on the night. San Francisco is middle of the pack in terms of runs per game on the road at 4.33, but they’ve slumped in the last 2 series, bringing their numbers down. I believe they bounce back to their expected numbers tonight in a great matchup, and for that, the over is my bet here on the Giants. 

Pick: Matt Chapman (SF) Over 1.5 Hits/Runs/RBIs (-130 on DraftKings)

Pick: Giants Team Total Over 4.5 Runs (-120 on DraftKings)

 

 



 

Best MLB Prop Bets & Other Picks Today, 5/30

Pick: Pete Alonso (NYM) Over 1.5 Hits/Runs/RBIs (-145 on DraftKings)

Pick: Ronald Acuna (ATL) Over 2.5 Hits/Runs/RBIs (+100 on DraftKings)

Pick: Tigers & Royals Under 8.5 Runs (-105 on DraftKings)

Pick: Rays & Astros Under 8.5 Runs (-125 on DraftKings)

Pick: Cal Raleigh (SEA) Over 1.5 Hits/Runs/RBIs (-110 on DraftKings)