How, where to trade on Week 1 college football: Top sites, apps, promos for Kalshi, Underdog, Polymarket

Today features the first jam-packed college football slate of the calendar year in Week 1 of the 2026 college football season, leading to a bevy of options for college football trading at prediction market apps. There are plenty of storylines in the Week 1 college football schedule as well, such as Lane Kiffin's LSU debut, Arch Manning beginning his second year as QB1 in Texas and how Indiana fares without Fernando Mendoza. We'll get a glimpse into those answers on Saturday with all three teams in action, creating ways to take advantage of some of the best prediction market promos on Saturday. If you're looking for the top offers and matchups at college football prediction markets, you can find several options below. Trade on Week 1 college football at Polymarket with the newest promo code CBSSPORTS and get $50 in bonus trading credits after making a $10 deposit:

LSU hosts Clemson at 7:30 p.m. ET in one of the highlights of the Week 1 college football schedule. LSU is trading at $0.78 per contract to win, with Clemson at $0.23. Saturday also features Boise State ($0.06) vs. Oregon ($0.95) and UCLA ($0.54) vs. Cal ($0.48). If you're wondering how and where to trade on the college football slate, learn more about the top prediction markets, such as Kalshi, Polymarket and Underdog Predict, below, along with predictions for some of the biggest games. Claim the latest Underdog Predict promo code here and register with the Underdog promo code CBS:

Where to trade on Week 1 college football

How to sign up for the Kalshi promo code CBSSPORTS

1. Tap the CLAIM BONUS button and download the Kalshi app.
   
2. Register for a Kalshi account and enter the information requested, including name, address, phone number and SSN. Users must be 18+ within a state where Kalshi operates. Do not forget the Kalshi referral code CBSSPORTS to lock in the bonus offer. 
3. Once registered, tap the green "Deposit Cash" button, choose your preferred deposit method and follow the ensuing steps. 
4. New users must trade at least $25 in contracts.
5. Eligible users receive $25 in bonus trading credits. Credits expire seven days after the initial receipt.

Claim your Kalshi bonus here, and remember to use the Kalshi referral code CBSSPORTS:

How to sign up for the Polymarket referral code CBSSPORTS

1. Tap the CLAIM BONUS button above or anywhere on this page and download the Polymarket app.
2. Register for a Polymarket account and enter the required information, including name, address, phone number, and SSN. Be sure to enter the Polymarket referral code CBSSPORTS to secure the trading bonus offer and receive instant access to the Polymarket app.
3. Once registered, make your first deposit using your desired deposit method and follow the prompts.
4. New users must deposit at least $10 in contracts for the $50 trading bonus to be applied to their account.

After depositing $10 with the Polymarket promo code, new users will be given a $50 trading bonus:

How to sign up for the Underdog Predict promo code CBS

1. Tap the CLAIM BONUS button anywhere on this page and download the Underdog Sports app.
2. Register for an Underdog account and enter the required information, such as name, address, phone number and SSN. Users must be 18+ (19+ in AL, NE; 19+ in CO for some games; 21+ in AZ, MA & VA) and have a legal U.S. residential address in a state where Underdog operates.
3. Be sure to use the Underdog promo code CBS.
4. Verify your email.
5. Make a first-time deposit and receive 50% of your deposit in bonus funds.
6. Receive bonus funds within 72 hours of your first deposit. 

This promo is not available in MD, MI, NJ, OH, PA. Bonus funds can't be used on prediction markets, but they can be used on fantasy entries at Underdog.

Claim the latest Underdog Predict promo code here and register with the Underdog promo code CBS:

How prediction markets work

Prediction markets offer event contracts where users can purchase positions of a result at a given price (between $0.01 and $0.99) and if you're correct, those positions then pay out at $1.00 per contract. 

Contract prices are reflective of what the market predicts the win probability to be and are subject to change as money rolls in. Here's a guide showing event contract prices along with their equivalent American odds:

Equivalent odds for Week 1 college football prediction market prices

• $0.10 per contract = +900
• $0.20 per contract = +400
• $0.30 per contract = +233
• $0.40 per contract = +150
• $0.50 per contract = +100
• $0.60 per contract = -150
• $0.70 per contract = -233
• $0.80 per contract = -400
• $0.90 per contract = -900

Trading on Week 1 college football

Oregon vs. Boise State: Oregon to win by more than 24.5 points NO ($0.51)

The Ducks return standout quarterback Dante Moore, but Boise State quarterback Maddux Madsen is also back. Madsen enters his third year as the starting quarterback, and he threw for 2,334 yards last year after passing for 3,018 the year before. He wasn't as sharp last year (18 TDs, nine interceptions compared to 23 TDs and six interceptions the season before), but he's shown he can be a reliable quarterback. Boise State has 29 straight winning seasons, including going 9-5 last year, and although Oregon is the preseason No. 2, the model projects Boise State, which returns 13 starters, to keep this close. The model projects the Broncos to cover in 54% of simulations. Trade on college football at Kalshi and get $25 in bonus trading credits after trading $25 with the referral code CBSSPORTS:

Baylor vs. Auburn: Fewer than 59.5 total points ($0.51)

Both Auburn and Baylor are starting new quarterbacks and feature significantly revamped rosters. Ten of 11 Auburn offensive starters are from the transfer portal, which means chemistry may not be there in Week 1 for offensive outbursts. Seven of Baylor's starters come from the transfer portal. Meanwhile, only three of Auburn's defensive starters are from the transfer portal, and Auburn's defense ranked 29th in the nation last year in scoring, allowing 21 points per game. The model projects less than 58.5 total points scored in 78.1% of simulations. 

Fewer than 59.5 total points scored for Auburn vs. Baylor is trading at $0.10 per contract. More than 59.5 total points scored is trading at $0.51. Claim the latest Underdog promo code here and register with the Underdog promo code CBS:

Clemson vs. LSU: Fewer than 51.5 total points scored ($0.52)

Both Clemson's and LSU's starting quarterbacks went in the 2026 NFL Draft in Cade Klubnik (Clemson) and Garrett Nussmeier (LSU). This means significant changes are coming, including Lane Kiffin taking over as LSU head coach. Kiffin's arrival brings excitement, especially offensively, but there's no guarantee that transfers will result in Week 1 with a quarterback and skill-position group of starters all coming from the transfer portal. Meanwhile, LSU had the No. 24 scoring defense (20.7 ppg allowed), with Clemson 33rd at 21.4 ppg allowed. The model projects less than 51.5 total points scored in 72.3% of simulations. 

Fewer than 51.5 total points scored for LSU vs. Clemson is trading at $0.52 per contract. More than 51.5 total points scored is trading at $0.49. Trade on college football at Polymarket with the Polymarket promo code CBSSPORTS to get a $50 trading bonus:

Responsible trading

Prediction markets are regulated by the Commodity Futures Trading Commission (CFTC) — an independent agency of the U.S. federal government.

Prediction market trading should be used for entertainment purposes in a fun, responsible manner. Trading is risky and involves a risk of loss; always trade responsibly.

Responsible Trading toolkits on prediction market platforms involve:

• Deposit Limits
• Session Time Limit
• Timeout
• Self-Exclusion
• Close Your Account
• Contact Helplines

Prediction market platforms offer Responsible Trading resources that can be found in your account settings after logging in or by request by contacting customer support. Concerned about your trading? Call or text 1-800-MY-RESET. 

Event contracts trading involves a risk of substantial loss and is not suitable for all investors. Participation in prediction markets is subject to applicable eligibility requirements. Participation may be restricted or prohibited in certain jurisdictions and participants are responsible for ensuring their participation complies with applicable laws and regulations in their jurisdiction. Prediction markets content is not intended for individuals located in jurisdictions where they are prohibited.

Some markets on the Polymarket global site may not be available on the CFTC federally-regulated and licensed Polymarket U.S. app. Volume and pricing on the Polymarket U.S. app may differ from the Polymarket global site.