Play $5 Get $75 Bonus on Knicks vs Celtics NBA: Use Underdog Code BTSLINES

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Written By John Carlo Villaruel | Published at February 5, 2026
Play $5 Get $75 Bonus on Knicks vs Celtics NBA Use Underdog Code BTSLINES

Two teams that are performing well this campaign and battling it out for supremacy in the Atlantic Division clash this weekend. The New York Knicks make the trip to Boston on Sunday to lock horns with the Boston Celtics at TD Garden. Popular daily fantasy sports (DFS) site Underdog has an exclusive promo code bonus for the game. When you open a new account using the promo code BTSLINES and play $5 on any Underdog fantasy contest, you will unlock $75 in bonuses or entries for the Knicks vs Celtics clash.

Underdog Play $5 in Fantasy Entries, Get $75 in Fantasy Bonus Entries
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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. Offer not valid in MD, MI, NJ, NY, OH, and PA. Concerned with your play? Call 1-800-MY-RESET or visit www.ncpgambling.org; NY: Call the 24/7 HOPEline at 1-877-8-HOPENY or Text HOPENY (467369).

What to expect from the Knicks vs Celtics Clash

The battle of the Atlantic takes place here, and with how congested the Division is right now, a win is a must for both of these sides. The Celtics head into Sunday’s showdown with good form and a change in their lineup. After trading for Bulls big man Nikola Vucevic, the Celtics have addressed their frontcourt issues and saved some money by letting go of Anfernee Simons, freeing up the wage bill. With the Celtics making a push for the playoffs, bringing Vucevic into the fold looks to be a smart move, especially if the veteran can stay fit for the majority of the remainder of the season.

Like the Celtics, the visiting Knicks side is also in good form and firmly in the mix for the top spot in the Atlantic Division. The team is playing good basketball and scoring well, averaging over 115 points per game. However, one issue right now is the injury list, and recently, Josh Hart was added to the list of players with fitness issues. Ahead of the clash at TD Garden, you should keep an eye on the injury news before placing your DFS picks with Underdog.

A Guide on Claiming your Underdog Promo Code BTSLINES Bonus

The good thing about the Underdog promo code offer is that it is easy to unlock your bonuses or entries for NBA DFS contests. Below is a guide on how to register at Underdog using promo code BTSLINES and play $5 to unlock your $75 in bonuses or entries for the Knicks vs Celtics game:

  1. Download the official Underdog app.
  2. Create a new account using promo code BTSLINES.
  3. Play $5 on any Underdog Fantasy contest.
  4. Unlock $75 in bonuses or entries for Knicks vs Celtics (bonus entries are valid for 14 days).
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