Justin Allgaier paces XFINITY practice:

#7-Justin Allgaier was quickest in the only XFINITY practice at Bristol Motor Speedway with a speed of 124.420mph.
#20-Erik Jones was second, followed by: #42-Kyle Larson, #22-Ryan Blaney, #2-Austin Dillon, #3-Ty Dillon, #33-Brandon Jones, #6-Darrell Wallace, Jr., #48-Brennan Poole, and #00-Cole Custer.
All 40 drivers practiced during the session.
See complete results on the Bristol final practice speeds page (pdf).