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Three Cup cars fail prerace inspection at Martinsville Speedway

Monster Energy NASCAR Cup Series STP 500 - Practice

MARTINSVILLE, VA - MARCH 23: William Byron, driver of the #24 Axalta Chevrolet, drives during practice for the Monster Energy NASCAR Cup Series STP 500 at Martinsville Speedway on March 23, 2019 in Martinsville, Virginia. (Photo by Jared C. Tilton/Getty Images)

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MARTINSVILLE, Va. -- The cars of William Byron, DJ Kennington and Jeb Burton failed inspection Sunday morning at Martinsville Speedway.

Byron’s No. 24 Chevrolet failed mechanical measurements. His sixth-place qualifying time will be disallowed, and he will have to start from the rear.

Kennington failed the OSS. He qualified 34th.

Burton had qualified 33rd.

The three cars will officially start behind those that passed inspection. Cars that qualified behind them will move up one spot.

The No. 24 suffered a right-front tire problem in the opening minutes of first practice Saturday morning, and the team made repairs to put the car back on track.