Denny Hamlin’s 2023 podcast idea became NASCAR’s $1M In-Season Challenge in 2025

Denny Hamlin’s 2023 podcast idea became NASCAR’s $1M In-Season Challenge in 2025

Denny Hamlin pitched a March Madness-style bracket in 2023 that NASCAR adopted as the In-Season Challenge in 2025. The single-elimination tournament runs over five summer races with a $1 million prize and no impact on points.

What happened?

NASCAR unveiled its In-Season Challenge in 2025 after Denny Hamlin floated the idea on his *Actions Detrimental* podcast in 2023. The concept was simple: a 32-driver, single-elimination bracket layered over existing races. Drivers qualify by points, then face head-to-head matchups over five consecutive events. The higher finisher in each matchup advances, while the regular championship battle continues untouched.

TNT Sports returned to NASCAR’s broadcast lineup in 2025 and took ownership of the bracket concept. The network added dedicated coverage and even let fans fill out their own brackets, mirroring the NCAA Tournament. The first year drew mixed reviews after a massive multi-car crash at Atlanta wiped out much of the field early.

Why it matters for Denny Hamlin

Hamlin’s idea didn’t just tweak the car or the rules. It changed how fans engage with the sport mid-season. The In-Season Challenge gives broadcasters a second storyline during the traditional summer lull, keeping viewers hooked even when the title race feels decided. TNT Sports executive Craig Barry called it “a show within a show,” stressing it was never meant to replace the race itself.

For Hamlin, the project proves drivers can shape the sport beyond the track. He didn’t just suggest more horsepower or safer barriers. He reimagined the competition format itself. The result: a $1 million bonus for the winner and a fresh reason to watch NASCAR in June and July.

How the bracket works

Thirty-two drivers enter based on points. They’re paired in head-to-head matchups over five races. The higher finisher in each matchup moves on, regardless of where they finish the race. The winner takes home $1 million, while the championship points remain unchanged.

TNT’s coverage includes dedicated bracket updates and analysis throughout race days. Fans can track their own picks online, adding a fantasy-like layer to the summer slate. The format avoids the Playoff structure’s high stakes, focusing instead on short-term drama.

Early results and future outlook

After a rocky debut in 2025, the tournament gained traction in its second year. Barry admitted the first edition “wasn’t that sticky,” but the 2026 version became part of the conversation. The Atlanta crash in 2025 exposed the format’s fragility, but the idea itself survived.

NASCAR and TNT plan to refine the bracket based on feedback. Drivers have embraced the extra spotlight, and fans now have another reason to follow races in the summer doldrums. Hamlin’s brainchild may have started as a podcast rant, but it’s now a permanent fixture in the sport’s calendar.