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One of the best promo offers arrives at the perfect time, right before kickoff on the Colts vs. Chiefs Sunday Night Football matchup tonight at 8:20 p.m. ET on NBC. This contest is a rematch of last season's game, when Kansas City survived with a narrow overtime win. The 2026 version arrives with both quarterbacks freshly back from major injuries, and the Colts trying to stop an eight-game slide dating back to last season.
Underdog Promo Code TOPACTION Full Offer Details
| Detail | Value |
|---|---|
| New Player Offer | Keep Your Million + 50% Deposit Match up to $1,000 in Bonus Funds! |
| Promo Code | TOPACTION |
| Offer Type | 50% first-deposit match + free Keep Your Million opt-in |
| Minimum Deposit | $10 |
| Deposit Match | 50% of first deposit, up to $1,000 in bonus funds |
| Maximum Match | Deposit $2,000 to receive the full $1,000 match |
| Bonus Turnover | 1x |
| Bonus Expiration | 14 days |
| Available States | AL, AK, AZ, AR, CA, CO, DE, DC, FL, GA, IL, IN, KS, KY, MA, MD, MI, MN, MS, MO, NE, NH, NJ, NM, NC, ND, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VT, VA, WV, WI, WY |
| Platform | Underdog |
| Last Verified | September 17, 2026 |
Keep Your Million sits on top of the sign-up offer at no cost. Underdog loads $1,000,000 in virtual Bonus Funds into qualifying accounts and puts 20 higher-or-lower questions in front of you. Each round, a slider decides how much of the pot you commit. Whatever is still standing after question 20 converts into real Bonus Funds.
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Colts vs. Chiefs: Underdog Picks for Sunday Night Football
The Colts vs. Chiefs matchup has some intriguing NFL angles, especially with rain in the Arrowhead forecast and both offenses leaning on their running backs. Here are three Underdog higher/lower picks worth a slip tonight.
If you're signing up with the Underdog promo code TOPACTION, your Bonus Funds work just fine here:
Jonathan Taylor: More than 79.5 Rushing Yards
Taylor opened the season with 19 carries for 98 yards and two touchdowns, and he did it in a game Indianapolis trailed most of the night, which matters. The Colts abandoned the run to chase Baltimore, dropping to a 37.7% run rate, and Taylor still cleared that mark.
A closer script only helps. Under Shane Steichen, the Colts are 8-1 straight up coming off games where they allowed 300-plus passing yards, winning those by an average of 10.1 points, and they're 10-6 against the spread as road underdogs. This profiles as a run-dominant game on both sides, as Indianapolis is still built around Taylor, and Walker is now the focal point in Kansas City. Add a 72% chance of showers over Arrowhead right around kickoff, and the volume case gets stronger, not weaker.
Josh Downs: More than 40.5 Receiving Yards
This is the target-share play. Downs is Indy's sharpest route runner, and in a passing game with very little else working right now, he should see a heavy share of what Daniel Jones throws. Honestly, I believe he could see as many as seven or eight looks if the Colts spend the night playing from behind.
The matchup cooperates too. Downs works the middle of the field, and he'll spend most of the night matched up with L'Jarius Sneed, who struggled through last season before a strong showing against Denver in Week 1. Downs managed only two catches for 37 yards in the opener, which is exactly why the line is sitting here instead of in the high 40s. And if Kansas City does what the market expects and builds a lead, Downs becomes the volume outlet.
Patrick Mahomes: Less than 236.5 Passing Yards
Mahomes was efficient in his return from an ACL tear, but not over the top: 184 yards and two touchdowns through the air, plus seven carries for 23 yards and a rushing score. Meanwhile, Kenneth Walker III went for 173 yards in his Chiefs debut, and the passing game simply didn't look sharp.
Kansas City has no reason to change that formula against a Colts defense that just surrendered 202 rushing yards and three touchdowns to Derrick Henry. The environment agrees: the Chiefs are 13-27 to the over/under when laying six or more at home since 2018, and Kansas City enters on a six-game under streak. Rain, a lead, and a running back playing this well is the recipe for a 22-of-31, 215-yard night.
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