Underdog Promo Code BTSLINES: TNF Week 9 Betting

Written By thelines.com | Last Updated at October 27, 2025

Thursday Night Football sets the stage for an exciting Week 9 of NFL action with the Dolphins hosting the Ravens at Hard Rock Stadium and Underdog has something to get you ready for this crucial AFC showdown. Sign up and play at least $5 using the Underdog promo code BTSLINES to get as much as $100 in bonuses or entries you can use for the Dolphins-Ravens matchup. With the Dolphins and Ravens coming off separate wins, both teams will enter this game in high spirits and this latest offer from Underdog adds extra value for anyone looking to join in the action.

Week 9 Thursday Night Football: Latest Betting Lines & Odds

Momentum is high as both teams head into this matchup fresh off double-digit victories against separate opponents in Week 8 of NFL action. However, oddsmakers have the Lamar Jackson-less Ravens as the 8.5-point favorites in this matchup and that has a lot to do with their dominant ground game and improved offensive efficiency without their star quarterback. Tyler Huntley has stepped up admirably in Jackson’s absence, completing 17 of 22 passes for 186 yards and adding 53 rushing yards in Baltimore’s 30-16 win over the Bears.

Miami, for its part, opened as +268 underdogs despite beating the Ravens in two of their past three encounters. The Dolphins will look to ride the momentum from their 34-10 rout of the Falcons as Tua Tagovailoa’s strong performance and a disciplined rushing defense held Atlanta to just 45 yards on the ground. Miami’s offensive line and secondary will once again be key here for the Dolphins especially against a Ravens defense that has been vulnerable to big passing plays as what we’ve seen in the past few weeks. Follow the momentum and place your bet on this matchup at Underdog.

Underdog might just be new but one thing you can’t knock is how easy it is to get started using the promo code BTSLINES.

Download the Underdog Fantasy mobile app via Google Play Store or App Store
Register for an accountusing our exclusive Underdog promo code BTSLINES
Top up your account using your preferred method
Play at least $5 on any NFL contests
Unlock $100 in bonus or entries for Thursday Night Football

Offer is only limited and valid across multiple US states, including Alabama, Nebraska, and Texas among others. So, make sure to sign up using the latest Underdog promo code BTSLINES today and check The Lines for more offers like these.