Grid briefing
Denny Hamlin leads the NASCAR Cup Series at Martinsville starting lineup
How the front row was set
Denny Hamlin's 19.275-second lap won the Martinsville pole by 0.356 seconds over William Byron, a substantial gap on the half-mile paperclip.
What track position means at Martinsville Speedway
Martinsville's flat paperclip repeatedly tests brakes, center rotation and rear-tire traction in close traffic.
NASCAR Cup Series at Martinsville grid watch
Chase Elliott won from P10, so fans comparing starts with results can see that the decisive car came from five rows behind Hamlin and Byron.
Starting-order facts checked against Martinsville Cup qualifying results. A post-qualifying inspection or unapproved adjustment can still send a car to the rear without changing its scored starting position.