The League Championship Series of the MLB has provided some entertaining games, providing several betting opportunities for users. Tonight's Game 5 between the Blue Jays vs Mariners promises to provide some exciting action, perfect for MLB fans and bettors alike. Fortunately, the incredible Underdog Fantasy Sportsbook is providing a generous new bettor bonus of Play $5 Get $100 in Bonuses, which is a superb way to kick start your time at the site.

As well as the current Underdog Fantasy promo 'NDUNDOG', players can expect superb sportsbetting features on the site. These include competitive odds and a variety of leading markets. Keep reading to find out more on redeeming the Underdog Fantasy promotion.

Underdog Fantasy MLB Bonus

Baseball fans can step up to the plate with the latest Underdog Fantasy offer, Play $5, Get $100 in Bonus Funds. This promotion gives new users the perfect opportunity to experience the excitement of MLB action while boosting their first wagers. To get started, simply create a new Underdog Fantasy Sportsbook account, make a minimum deposit of $10, and place a $5 qualifying wager. Once these steps are complete, you’ll instantly unlock $100 in bonus funds to use across a wide variety of betting markets, from game totals to player props. Don’t forget to enter the promo code “NDUNDOG” at sign-up to secure the offer. Eligible users must be 18+ and located in a legal Underdog Fantasy state to participate.

Blue Jays vs Mariners: League Championship Series

The League Championship Series continues tonight with a must-watch matchup between the Toronto Blue Jays and Seattle Mariners at 6:08 PM ET from T-Mobile Park. Both teams are riding high after strong postseason performances, setting the stage for a high-intensity battle under the lights in Seattle.

The Blue Jays will rely on their explosive lineup led by Vladimir Guerrero Jr. and Bo Bichette, while the Mariners counter with their dominant pitching rotation and home-field advantage. With a World Series berth on the line, expect electric at-bats, late-inning drama, and a playoff atmosphere that keeps fans on edge from the first pitch to the final out.

Underdog Fantasy Bonus T&Cs

Must be 18+ (19+ in AL, NE; 19+ in CO for some games; 21+ in AZ, MA, and VA) and present in a state where Underdog Fantasy operates. Terms apply. See assets.underdogfantasy.com/web/PlayandGetTerms_DFS_.html for details. Offer not valid in MD, MI,NY, OH, and PA. Concerned with your play? Call 1-800-GAMBLER or visit www.ncpgambling.org; NY: Call the 24/7 HOPEline at 1-877-8-HOPENY or Text HOPENY (467369).

Underdog Fantasy Legal States

Players looking to redeem the current Underdog Fantasy MLB offer must be aged 18+ and located in a legal Underdog Fantasy state. Keep reading below to find out more.

• Alabama

• Alaska

• Arizona

• Arkansas

• California

• Colorado

• DC

• Florida

• Georgia

• Illinois,

• Indiana

• Kentucky

• Massachusetts

• Minnesota

• Missouri

• Nebraska

• New Mexico

• New York

• North Carolina

• North Dakota

• Oklahoma

• Oregon

• Rhode Island

• South Carolina

• South Dakota

• Tennessee

• Texas

• Utah

• Vermont

• Virginia

• West Virginia

• Wisconsin

• Wyoming

How to Claim the Underdog Fantasy MLB Bonus

Our valued readers will be pleased to hear that it is extremely simple to redeem the current Underdog Fantasy MLB bonus offer. Read the simple step-by-step guide below to get started:

1. Firstly, click the link within this article to access the Underdog Fantasy Sportsbook. 

2. Once on the interface, select ‘Sign Up’ to begin registration.

3. You must enter all required information on the form, including your full name, email address, and login details.

4. Next, you need to verify your Underdog Fantasy Sportsbook account by selecting the link in your email inbox from the brand. 

5. You must fund your account to redeem the lucrative bonus and place wagers on the site. To do so, visit the cashier section of the site. 

6. You may be required to choose a payment method and enter the amount you wish to deposit here.

7. The minimum deposit for the welcome offer $10, and the minimum wager for the $100 in bonus funds is $5.

8. You must enter the promo code 'NDUNDOG' when prompted.

9. Once you have completed all of the above steps, the bonus offer will be granted to you.  

Responsible Gambling

If you or someone you know has a gambling problem and wants help, call or visit the Council on Compulsive Gambling:

• Gamblers Anonymous at 855-2-Call GA or www.gamblersanonymous.org

• CO, DC, IL, IN, LA, MD, MS, NJ, OH, PA, TN, VA, WV, or WY – Call 1-800-GAMBLER

• AZ – Call 1-800-NEXT-STEP

• IA – Call 1-800-BETS-OFF

• KS, NV – Call 1-800-522-4700

• KY – Call 1-800 GAMBLER, 18+

• MI – Call 1-800-270-7117 for confidential help

• MA – Call 1-800-327-5050

• NC – Call – 1-800-662-4357

• NY – Call 877-8-HOPENY or text HOPENY (467369)

DISCLAIMER: The information on this site is for entertainment purposes only. Gambling comes with its fair share of risks, and it is essential to recognize that when using online gambling sites.

While we review different gambling sites, you should check with local laws in your area before gambling online. Also, all gambling sites and guides are rated 21+ only.

The following free gambling addiction resources can be of help:

21+ Please Gamble Responsibly.  Gambling Problem? Call or text 1-800-GAMBLER

NCPG – ICRG – Gamblers Anonymous – Gambling Therapy