Kyle Larson will miss today's race in Martinsville.

Kyle Larson fainted at an autograph session Saturday and will not be driving in today's race. His replacement is Regan Smith.

Larson was evaluated by a neurologist and so far all tests have come back negative.  The team is holding him from the race as a precaution.

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Larson is 22 years old and is in his second year in the Sprint Cup Series.  Larson drives the Target Car and considered one of NASCAR's up-and-coming favorites.  He also takes part in our favorite commercials!  Take a look here.

Get well soon, Kyle!