Kyle Busch began his weekend in the Xfinity Series in the same spot he’s finished the last three weeks – at the top.
Busch, once again driving the No. 18 Toyota for Joe Gibbs Racing, was fastest in the Xfinity Series’ first practice session for Saturday’s Treatmyclot.com 300 at Auto Club Speedway.
Busch finished the session with a top speed of 177.327 mph, considerably faster than second quickest Erik Jones at 174.982 mph. Busch only made two laps in the session. Jones made 21 laps.
The Xfinity Series will have one more practice session at 5:30 p.m. ET on Fox Sports 1.
Justin Allgaier will go to a backup car after he slid up into the wall during practice.