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The Arizona Cardinals clash with the Seattle Seahawks in a key Thursday Night Football matchup between NFC West contenders as they kick off Week 4 of the NFL schedule, making it the perfect time to use the latest Underdog Fantasy promo code CBSSPORTS2. The Cardinals, who are coming off a 16-15 loss to the 3-0 San Francisco 49ers on Sunday, are tied with the Seahawks and Los Angeles Rams for second at 2-1. Seattle is coming off a 44-13 thumping of the New Orleans Saints in Week 3. The Underdog Fantasy promo code varies by location, but includes a potential Play $5, get $50 offer. Regardless of your location, using the Underdog Fantasy bonus code CBSSPORTS2 will ensure you get the best Underdog Fantasy promo code available in your state. Click here to get the latest Underdog Fantasy promo code for new users:

How to claim the Underdog Fantasy bonus code on Wednesday, September 24

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 bonus.

Get started here:

Best NFL Underdog Fantasy picks for September 24

RB Kenneth Walker III, Seattle Seahawks, 0.5 rushing + receiving touchdowns - Lower (1.07x)

Walker is in his fourth season with the Seahawks, after being drafted in the second round of the 2022 NFL Draft. In 45 career games, he has carried 639 times for 2,691 yards and 27 touchdowns. Although he has scored in back-to-back games, he has been held out of the end zone in seven of the past 10 games. Pick it at Underdog:

WR Marvin Harrison, Arizona Cardinals, 3.5 receptions - Lower (1.08x)

Harrison has 10 catches for 142 yards and one touchdown in three games this year. He has caught three or fewer passes in two of those. Last year, he finished with 62 catches for 885 yards and eight touchdowns. He was held to three catches or fewer in six games in 2024. Click here to sign up for Underdog Fantasy:

QB Sam Darnold, Seattle Seahawks, 1.5 passing touchdowns - Higher (1.15x)

Darnold has been a touchdown machine, beginning last year in Minnesota. In 17 games with the Vikings in 2024, he completed 66.2% of his passes for 4,319 yards and 35 touchdowns with 12 interceptions. He has thrown for two touchdowns in each of the past two weeks. Combine picks for a parlay on Underdog Fantasy for a potential payout of 8.6x.

With football season now here, 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.