The 2025 MLB Playoffs officially begin today, and the stakes couldn’t be higher. From the reigning champion Texas Rangers to surprise contenders like the Detroit Tigers, every at-bat carries October drama. And now, thanks to Underdog, you can make the postseason even more thrilling with our exclusive Underdog MLB Promo Code ALARM.

That’s because new players don’t just get to join exciting playoff contests—they’ll also score a guaranteed $100 bonus, plus access to Underdog’s famous Gimme Picks that can turn any lineup into a winner. With so many ways to cash in while enjoying the biggest games of the year, we’ve broken everything down for you below.

If you’re ready to get in on the action, just sign up here using the Underdog MLB Promo Code ALARM today!

 

 

 

Underdog MLB Promo Code ALARM Unlocks a 20x Bonus Guaranteed

There’s no doubt that today’s playoff openers will have the baseball world locked in, but the beauty of this offer is that it’s not just about October baseball.

Here’s how it works:

  • Enter our Underdog MLB Promo Code ALARM when you register.
  • Submit your first contest entry of $5 or more—on any sport, not just MLB.
  • Win or lose, you’ll automatically receive $100 in bonus cash.

That’s a guaranteed 20x boost simply for getting started. No need to stress about the outcome of your first entry—the bonus is yours regardless when you join here.

 

 

 

How To Use Our Underdog MLB Promo Code ALARM

Postseason baseball means earlier first pitches and tighter schedules, so make sure you’re ready to go with these quick steps:

  • Join here and create your new Underdog account.
  • Enter our exclusive Underdog MLB Promo Code ALARM during sign-up.
  • Submit your first $5+ contest entry in any sport.

Once you’ve done that, your $100 bonus cash will be credited automatically. And if your entry wins, you’ll collect those winnings on top of your bonus.

 

 

 

Why Play on Underdog?

The $100 playoff bonus is the perfect way to start, but Underdog’s platform offers so much more for sports fans year-round:

  • Unique contest formats like Best Ball and Pick’em.
  • Quick, easy payouts without the hassle.
  • Cross-sport flexibility—MLB, NFL, NBA, NHL, and more.
  • Live news updates to help set your lineups.
  • A sleek mobile app for effortless navigation.

And don’t forget—today’s offer also comes with a FREE MLB Gimme Pick, which we’ll explain below.

 

 

 

Where Is Underdog Legal?

Another important question: where can you actually use Underdog? Fortunately, the answer covers nearly everywhere.

Underdog is legal in every state except:

  • CT, HI, ID, IA, LA, MI, MT, NY, and NV.

So as long as you’re not in one of those states, you can take full advantage of our Underdog MLB Promo Code ALARM for the playoffs.

 

 

 

Enjoy MLB Gimme Picks With Underdog MLB Promo Code ALARM

Along with your $100 bonus, Underdog sweetens the deal with Gimme Picks. Unlike standard promo picks that are reduced to 0.5 stats, these are set at 0.0, making them automatic winners.

For today’s playoff slate, that means a free square tied directly to the October action—an extra edge for your very first entry. Just like your 20x welcome boost, all you need to do is activate our Underdog MLB Promo Code ALARM here to unlock it.

 

 

 

Bottom Line

The 2025 MLB Playoffs are here, and Underdog has made it the perfect time to jump in. With the Underdog MLB Promo Code ALARM, you’ll score a guaranteed $100 bonus, free Gimme Picks, and access to one of the most user-friendly fantasy platforms out there.

So before the first pitch flies today, don’t miss your chance—sign up with Underdog MLB Promo Code ALARM now and get your postseason started with a win.

 

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