Before Friday, Kyle Benjamin had never raced an Xfinity Series car.
At the end of the day, Benjamin had the fastest speed in final practice for the ToyotaCare 250 at Richmond International Raceway.
Driving the No. 20 Toyota for Joe Gibbs Racing, the 19-year-old from Easley, South Carolina, posted a speed of 117.081 mph around the short track.
Larson had the best 10-lap average at 115.405 mph.
Austin Dillon recorded the most laps in the session with 64.