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Kurt Busch tops Cup Series practice at Road America, Kyle Busch crashes

Kurt Busch knocked off brother Kyle Busch from the top of the leaderboard with less than three minutes left in Saturday’s NASCAR Cup Series practice in preparation for Sunday’s Jockey Made in America 250 at Road America (2:30 p.m. ET, NBC/NBC Sports App, MRN, SiriusXM NASCAR Radio).

RELATED: Practice results

Busch laid down a lap of 133.849 seconds at 108.875 miles per hour in the No. 1 Chip Ganassi Racing Chevrolet. Kyle Busch finished with the second-fastest time at 134.116 seconds with a speed of 108.658 mph, but that was before he crashed the No. 18 Joe Gibbs Racing Toyota in the lone practice session. Busch came on the radio right after the incident: “The car is killed. Backup.”

The team did elect to pull out the backup car for Sunday’s race and will be forced to start at the rear of the field.

Austin Cindric, Ryan Blaney and Tyler Reddick finished out the top-five positions, followed by Denny Hamlin, AJ Allmendinger, Christopher Bell, Kyle Larson and Chase Briscoe to round out the top 10.

Another driver going to a backup car for Sunday will be Ryan Preece, who received significant damage to the front end of the No. 37 JTG Daugherty Racing Chevrolet early on in the session. Preece will also start from the rear.

Brad Keselowski went for a spin with a handful of minutes left, but was able to keep the No. 2 Team Penske Ford off the wall and away from any damage.

Next up for the Cup Series is Sunday’s Busch Pole qualifying session at 11:05 a.m. ET on NBCSN/NBC Sports App.