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Week 16 of the NFL schedule concludes with a 'Monday Night Football' matchup between the visiting San Francisco 49ers and the Indianapolis Colts, making it the perfect time to use the latest Underdog promo code CBSSPORTS2. Brock Purdy will face 44-year-old Philip Rivers and the Colts. Outside of the gridiron, there is also upcoming NBA, college basketball and more, all of which can be played on the best DFS apps. The Underdog promo code varies by location, but includes a potential Play $5, get $75 in bonus entries. Regardless of your location, using the Underdog bonus code CBSSPORTS2 will ensure you get the best Underdog promo code available in your state. Click here to get the latest Underdog promo code for new users:

How to claim the Underdog promo code on Monday, December 22

After downloading the Underdog Fantasy app, here's how to get started and use the Underdog promo code CBSSPORTS2. Follow these steps to claim your Underdog Fantasy deposit match bonus. 

  1. How to get started: click the CLAIM BONUS button below to access the latest offer and be redirected over to Underdog or click here.
  2. How to enter the Underdog bonus code: click "sign up" and enter your information to create an account. Then tap or click the 'Add Promo Code' button. Type in CBSSPORTS2.

  3. How to activate the Underdog bonus code for new users: If you have a Play & Get offer, enter any contest of $5+ to activate your welcome offer of $75 in bonus entries.

Get started here:

Best NFL Underdog Fantasy picks for NFL Week 16

QB Brock Purdy, San Francisco 49ers, 1.5 passing touchdowns - Higher (0.72x)

Purdy has thrown for two or more passes in four of six games this season. In last week's 37-24 win over the Tennessee Titans, he threw for three touchdowns. The SportsLine model projects 2.1 passing touchdowns. Pick it at Underdog:

QB Philip Rivers, Indianapolis Colts, 0.5 rushing yards - Higher (1.12x)

Rivers is far from a running quarterback, but the 49ers pass rush has been relentless and Rivers may be forced to tuck it and run at least once on Monday night, or even a quarterback sneak could get it done. Click here to sign up for Underdog Fantasy:

RB Christian McCaffrey, San Francisco 49ers, 4.5 receptions - Lower (1.07x)

McCaffrey has caught four or fewer passes in each of the last two games. The model is projecting 3.3 receptions, giving this a 4 out of 5 rating. Combine picks for a parlay on Underdog Fantasy for a potential payout of 3.49x.

The SportsLine Projection model also offers picks for every NFL picks for every game on the slate, which you can use to help guide you in making NFL picks on Underdog Fantasy. 

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, NJ, 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).