Underdog Promo Code: Play $5, Get $100 in Entries for NFL Sunday

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NFL Sunday is the perfect time to test your instincts — and Underdog Fantasy is giving you a massive boost to do it. Right now, new users can play just $5 and get $100 in bonus entries when they sign up with this limited-time promo.

Build your dream lineup with your favorite stars, predict player stat lines in Pick’em contests, or join daily drafts to compete for huge payouts. With big names taking the field and playoff races heating up, there’s no better time to get in the game.

Don’t just watch Sunday football — play it your way with Underdog and turn your $5 entry into serious action!

Underdog

How to Sign Up and Claim the Underdog Fantasy Promo Code

1. Click here or on any “Claim Bonus” button on this page to go directly to Underdog Fantasy (bonus code FOXSPORTS applied automatically).
2. Register your account: provide full name, email, date of birth, address, and last 4 of SSN to verify eligibility.
3. Enter promo code FOXSPORTS to lock in the welcome offer.
4. Deposit at least $10 using PayPal, debit card, or online banking.
5. Play $5 in pick’em or sportsbook markets.
6. Once the entry/first wager settles, Underdog credits $100 in bonus cash (usable across DFS or sportsbook). 

Detroit Lions vs. Minnesota Vikings

Lions Betting Info

• Detroit has five wins in seven games versus the spread this year.
• The Lions have won each of their two games this season when playing as at least 8.5-point favorites.
• Detroit games this year have hit the over on three of seven set point totals (42.9%).
• The Lions have won each of the four games they were listed as the moneyline favorite this season.
• The Lions have an implied win probability, based on the moneyline, of 83.3%.

Vikings Betting Info

• Minnesota is 3-4-0 against the spread this season.
• This year, six Minnesota games have gone over the point total.
• The Vikings have lost both games they’ve played as underdogs this season.
• The Vikings have a 20.8% chance to win this game based on the implied probability of the moneyline.

Green Bay Packers vs. Carolina Panthers

Packers Betting Info

• Green Bay has three wins in seven games versus the spread this year.
• The Packers have not covered the spread when favored by 11.5 points or more this season (in one opportunity).
• Green Bay games this year have hit the over on four of seven set point totals (57.1%).
• The Packers have compiled a 5-1-1 record in games they played as moneyline favorite (winning 71.4% of those games).
• Looking at this game’s moneyline, the Packers’ implied win probability is 90.5%.

Panthers Betting Info

• Carolina has covered the spread in a game five times this season (5-3-0).
• This season, Carolina games have hit the over five times.
• This season, the Panthers have been the underdog eight times and won four of those games.
• The implied probability of a win by the Panthers based on the moneyline is 13.8%.

Houston Texans vs. Denver Broncos

Texans Betting Info

• Houston is 3-4-0 against the spread this year.
• The Texans have been favored by 1.5 points or more four times this season, and covered the spread in three of those contests.
• Houston games this year have hit the over on two of seven set point totals (28.6%).
• The Texans have won 75% of the time they have played as moneyline favorites (3-1).
• Based on this matchup’s moneyline, the Texans’ implied win probability is 55.0%.

Broncos Betting Info

• Denver has covered the spread three times over eight games with a set total.
• The Broncos have covered the spread once this year when underdogs by 1.5 points or more (in two chances).
• Games involving Denver have hit the over on three occasions this season.
• The Broncos have split the two games they’ve played as underdogs this season.
• The oddsmakers’ moneyline implies a 49.5% chance of a victory for the Broncos.

Los Angeles Rams vs. New Orleans Saints

Los Angeles Betting Info

• Los Angeles has played seven games, posting five wins against the spread.
• Los Angeles has combined with its opponent to hit the over in 42.9% of its contests this year (three times over seven games with a set point total).
• The Rams have put together a 5-1 record in games they played as the moneyline favorite (winning 83.3% of those games).
• Looking at this matchup’s moneyline, the Rams’ implied win probability is 91.7%.

Saints Betting Info

• New Orleans has put together a record of 2-6-0 against the spread this season.
• The Saints have been underdogs by 14.5 points or more once this season and covered the spread.
• This year, three New Orleans games have gone over the point total.
• The Saints have been the underdog in seven games this season, and they have failed to win any of those contests.
• The moneyline for this contest implies a 12.5% chance of a victory for the Saints.

Las Vegas Raiders vs. Jacksonville Jaguars

Jaguars Betting Info

• Jacksonville is 4-3-0 against the spread this season.
• The Jaguars have covered the spread when playing as at least 2.5-point favorites in their only opportunity this season.
• Jacksonville games in 2025 have hit the over three times in seven opportunities (42.9%).
• The Jaguars have been moneyline favorites in two other games this season, and they won both.
• The implied probability for this matchup, considering the moneyline, gives the Jaguars a 60.8% chance to win.

Raiders Betting Info

• Las Vegas is 2-5-0 against the spread this season.
• The Raiders have covered the spread once this season when underdogs by 2.5 points or more (in five chances).
• Games involving Las Vegas have hit the over twice this season.
• This season, the Raiders have won one out of the five games in which they’ve been the underdog.
• The Raiders have a 43.5% chance to win this game based on the implied probability of the moneyline.

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