New users who register with the Kalshi referral code ACTION2000 can claim one of the strongest welcome offers, up to $2,000 in bonuses. This welcome offer steps into the batter's box just in time for the MLB Playoffs, and the White Sox vs. Astros (5 p.m. ET, Peacock/NBCSN) first pitch is almost here.
With the Refer-a-Friend program, your Kalshi referral code lets you sign up up to 40 friends at $25 a clip. Do the math: 40 x $25 = $1,000 in bonuses you can claim from this offer. Kalshi's main competitor has a similar program but allows you to sign up only 14 friends.
The MLB Playoffs continue later tonight, with Wild Card Round matchups of Red Sox vs. Yankees and Cubs vs. Padres beginning their respective series. Game 2s for each series continue tomorrow as well, which includes the Phillies vs. Braves series. On Thursday, Steelers vs. Browns kicks off NFL Week 4 on Thursday Night Football before the real chaos ensues on Sunday.
Kalshi runs as a federally regulated prediction market under CFTC oversight, so the Kalshi referral code ACTION2000 reaches traders in more than 40 states. That list includes Texas, California, and Florida, three markets where traditional sportsbooks still sit on the sideline. Sports contracts currently stay unavailable or restricted in Arizona, Illinois, Maryland, Massachusetts, Michigan, Montana, Nevada, Ohio, and Washington. Litigation continues in several of those states, so check your eligibility at registration before you fund the account.
How to Claim the Kalshi Referral Code Bonus
The whole process takes a few minutes on your phone, so you have time before Tuesday's 5 p.m. ET first pitch. Enter the code during registration, not after, because Kalshi applies the offer at signup only. Four steps get you from a blank screen to a funded account:
- Tap any Kalshi link on this page, then enter the Kalshi promo code when prompted.
- Provide your name, address and Social Security number, then upload a photo ID plus a selfie.
- Deposit $10 or more via debit card, bank transfer, Apple Pay, Google Pay, Venmo or PayPal.
- Place $25 in cumulative trades to trigger the bonus.
One note: this Kalshi promo code offer covers new accounts only, and you use either the code or a friend's invite link, not both.
Kalshi MLB Odds: White Sox vs. Astros Preview & Prediction
| Market | Chicago White Sox | Houston Astros |
|---|---|---|
| Moneyline | 45% | 55% |
| Run Line | +1.5 (63%) | -1.5 (39%) |
| Total Runs | Over 8.5 (47%) | Under 8.5 (53%) |
First pitch for White Sox vs. Astros is at 5 p.m. ET on Tuesday, September 29, 2026. Always check Kalshi for the most up-to-date prices before the game begins.
White Sox vs. Astros Preview
Houston hosts all three games at Daikin Park as the AL West champion, yet the Astros enter October at 81-81 as the only club in this field carrying a negative run differential. They lost 32 more runs than they scored and went 39-42 at home, so the venue edge reads thinner than the seeding suggests. Chicago won three more games at 84-78 and arrives as the story of the season, reaching the postseason after three straight 100-loss campaigns.
The pitching plans stay murky, and that cuts against Houston. Both managers emptied the tank chasing the finish line, which points Chicago toward an opener with Erick Fedde behind him and Houston toward a bullpen game or Peter Lambert. Houston's rotation finished 27th in ERA, and Hunter Brown lines up for Game 2 rather than the opener.
Yordan Alvarez anchors Houston after a .316/.432/.601 season with 42 home runs. Chicago answers with more depth, posting a top-five offense behind first-time All-Stars Miguel Vargas and Munetaka Murakami, who cleared 35 homers.
The market charges a premium for Houston's logo and home dugout, and the resume underneath that price does not hold up. Chicago owns the better record, the better run differential and the deeper lineup, yet the number still treats the Sox as a road underdog. That gap is the whole play.
Game 1 magnifies it. A bullpen game or a Lambert start gives Chicago's bats a soft landing before Houston reaches its best arms, and the Sox proved in this building that they hang crooked numbers, including a 12-run outburst in the September series. Houston leans hard on Alvarez, so Chicago pitches around him and attacks a supporting cast that faded down the stretch.
Houston taking five of seven head-to-head gives us pause, and Alvarez alone justifies the short price. We still take the dog.
- White Sox vs. Astros Prediction: White Sox to Win (46%)
If you like our content and picks, sign up with the Kalshi referral code ACTION2000, claim your bonus and put it on the Pale Hose.
Terms & Conditions for Kalshi Promo Code ACTION2000
Certain limitations apply. The offer is available to new users only, subject to the terms and conditions. 18+ only. Restrictions and eligibility requirements apply. Event contract trading involves significant risk and is not appropriate for everyone. Please carefully consider if it is appropriate for you in light of your personal financial circumstances. Kalshi products are not available in all jurisdictions. See kalshi.com/regulatory for more information. Not available in AZ, IL, MA, MD, MI, MT, NV, OH, and WA.
