NASCAR’s most unusual midseason event is back, and the field is now set. Following Denny Hamlin’s win at Pocono, the sanctioning body confirmed the 32-driver bracket for the 2026 In-Season Challenge, the single-elimination tournament that runs inside the regular season and pays a million-dollar bonus to its eventual winner. Points leader Tyler Reddick earned the No. 1 seed, while Alex Bowman claimed the 32nd and final spot, and the head-to-head racing begins on June 28 at Sonoma Raceway.
The concept is simple to follow and brutal in practice. Thirty-two drivers are seeded one through 32, then paired off in a knockout bracket. Whoever finishes ahead of their assigned opponent in a given race advances; the loser is out, regardless of how strong the rest of their season has been. There is no aggregate scoring and no second chances, which means a single bad pit stop, a flat tire or a late crash can end a championship contender’s run while a journeyman rides a quiet top-20 into the next round.
How the 32 Drivers Were Seeded
Seeding was determined by performance across a defined three-race qualifying window rather than full-season points, which produced a bracket that does not perfectly mirror the championship standings. Reddick took the top seed, followed by Hamlin, Ryan Blaney, Chase Elliott and Ty Gibbs rounding out the top five. Kyle Larson, Chris Buescher, Daniel Suarez, Carson Hocevar and Christopher Bell filled out the top 10.
The quirks of a short qualifying window are easy to spot. William Byron finished third at Pocono and sits high in the championship, yet he landed only the 11th seed because his form across the three qualifying races was merely good rather than spectacular. John Hunter Nemechek, fresh off his first top-five of the year at Pocono, drew the 26th seed and a daunting first-round assignment. The final spot came down to a tiebreaker: Bowman and Cole Custer finished level, but Bowman earned the 32nd seed on the strength of his best 2026 result, a third-place run at Talladega.
The full seed list reads: 1. Tyler Reddick, 2. Denny Hamlin, 3. Ryan Blaney, 4. Chase Elliott, 5. Ty Gibbs, 6. Kyle Larson, 7. Chris Buescher, 8. Daniel Suarez, 9. Carson Hocevar, 10. Christopher Bell, 11. William Byron, 12. Chase Briscoe, 13. Bubba Wallace, 14. Shane van Gisbergen, 15. Erik Jones, 16. Austin Cindric, 17. Brad Keselowski, 18. Joey Logano, 19. Ryan Preece, 20. Michael McDowell, 21. AJ Allmendinger, 22. Ricky Stenhouse Jr., 23. Ross Chastain, 24. Zane Smith, 25. Todd Gilliland, 26. John Hunter Nemechek, 27. Riley Herbst, 28. Austin Dillon, 29. Noah Gragson, 30. Josh Berry, 31. Ty Dillon and 32. Alex Bowman.
The First-Round Matchups Worth Watching
Several opening pairings carry real intrigue. The headline mismatch on paper is No. 1 Reddick against No. 32 Bowman, but Bowman is a former Hendrick Motorsports race winner who has been quietly rebuilding his season, and Sonoma’s road course is the kind of track where a lower seed can spring a surprise. Reddick will be favored, yet road courses flatten the field and reward precision over horsepower, which is exactly the sort of variable this format thrives on.
The most compelling first-round clash may be No. 16 Austin Cindric versus No. 17 Brad Keselowski, a Team Penske and RFK Racing pairing of near-equal seeds that could go either way. No. 10 Christopher Bell against No. 23 Ross Chastain pits two aggressive winners against each other far earlier than their talent suggests they should meet, a direct consequence of Bell’s modest qualifying-window form. No. 7 Chris Buescher versus No. 26 John Hunter Nemechek is another tight one, with Nemechek arriving at Sonoma carrying the momentum of his Pocono top-five.
At the top of the bracket, Hamlin opens against No. 31 Ty Dillon, the underdog who famously upset the bracket a year ago and reached deep into the tournament as a massive long shot. Dillon proved in 2025 that seeding means very little once the green flag falls, and a rematch storyline against the hottest driver in the series gives the opening round an immediate edge. Elsewhere, No. 3 Blaney draws No. 30 Josh Berry, No. 4 Elliott meets No. 29 Noah Gragson, and No. 5 Gibbs faces No. 28 Austin Dillon.
The Road to Indianapolis
The tournament spans five rounds and five very different venues, a deliberate design that prevents any single driver from leaning on one specialty. After the Sonoma road course opens proceedings on June 28, the bracket moves to Chicagoland Speedway, then EchoPark Speedway, then the short-track throwback of North Wilkesboro Speedway, before the championship round is decided at Indianapolis Motor Speedway on July 26. A contender will need to be quick on a road course, on intermediates, on a short track and finally on one of the sport’s most historic layouts to claim the prize.
That variety is the point. A driver could be the fastest car on intermediates all summer and still be eliminated in the opening round at Sonoma if a road-course specialist edges them by a single position. The format rewards adaptability and a little luck in equal measure, and it has already shown a knack for producing unlikely deep runs that the conventional points system would never highlight. Ty Dillon’s improbable charge in the inaugural 2025 edition remains the template for how chaotic this event can become.
For the championship favorites, the In-Season Challenge is a curious mix of opportunity and risk. The million-dollar bonus and the bragging rights are genuine incentives, but the tournament runs concurrently with regular-season points racing, so a driver cannot simply prioritize one over the other. Reddick and Hamlin will be chasing the bracket while also trading blows for the actual championship lead, which currently separates them by just 19 points. A deep run by either in this event would deliver both a payday and a psychological edge heading toward the playoffs.
The smart money respects the top seeds, but recent history urges caution. Single-elimination racing has a way of humbling favorites, and with a bracket spread across four wildly different track types, the 2026 In-Season Challenge looks set to deliver another month of upsets, survival drives and at least one Cinderella story before the survivor lifts the trophy at Indianapolis in late July.
Why the Format Exists and Who Could Surprise
The In-Season Challenge was introduced to give the midsummer stretch of the schedule a sharper hook. The window between the Coca-Cola 600 and the playoffs has historically been a quieter run of points races, and the bracket gives casual viewers a reason to track a specific storyline week to week. It also leans into the betting and fantasy culture that now surrounds the sport, with a public bracket game letting fans pick their own winners against the field and follow the eliminations in real time.
For the lower seeds, the tournament is a rare chance to upstage the establishment without needing outright winning speed. A driver only has to beat one specific rival in any given week, so a steady operator who avoids trouble can string together advancements that a full-season points table would never reward. That is precisely how Ty Dillon became the breakout name of the 2025 edition, and several drivers in the bottom half of the 2026 bracket fit a similar profile, from road-course threat AJ Allmendinger to the consistently underrated Erik Jones.
Among the contenders capable of a genuine deep run, Larson stands out as the seed most likely to overperform. He is comfortable on every track type the bracket visits, from Sonoma’s road course to Indianapolis, and at the sixth seed he avoids the very top contenders until the later rounds. Shane van Gisbergen, seeded 14th, is a road-racing specialist who opens at exactly the right venue and could carve a path that looks far better than his number suggests. The format almost guarantees that at least one of these wildcard runs materializes before the trophy is settled at Indianapolis on July 26.
