The leader's two 2026 wins include Millbridge and Short Track, while Dan Mrak remains within reach.
Roger Diebold takes a 15-point Dash advantage into Darlington, leading Dan Mrak 248-233 after finishing second at Millbridge.
Diebold has won twice in 2026, at Millbridge and Short Track, and his season record also includes a third-place Darlington finish and sixth on the ROAD course. His 2026 Presidents Cup victory adds another completed specialty title to the campaign, following his 2025 Clements Cup.
Mrak's challenge remains live with two 30-lap races left. Darlington begins the final stretch before the Short Track finale on October 12.