NASCAR Cup, Kyle Larson and Denny Hamlin
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Phoenix Raceway. It's the only stop left in the 2025 season.             Hamlin and Briscoe got there via wins earlier in the Round of 8. Larson reached on points. And Byron advanced by winning the Xfinity 500 Sunday,
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NASCAR playoffs at Martinsville results: William Byron earns walk-off win to make the Championship 4
Byron made his move with 43 laps to go, moving Blaney off of the bottom groove in turn 1 to take the lead. But when a spin by Carson Hocevar brought out the caution with less than 20 laps to go, Byron and his crew had to execute both on their final pit stop and the final restart. They did so, earning the right to try and become a championship team.
A rash of cut left-side tires plagued practice for Sunday's NASCAR Cup Championship Race at Phoenix, and championship contender Chase Briscoe was impacted.
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In the thick of NASCAR playoff fight, Byron captures first Cup pole position at Martinsville
William Byron picked a good time for his first career NASCAR Cup Series pole at Martinsville Speedway, qualifying first for a race that he is treating as a must-win