Kyle Busch was fastest in the final Xfinity Series practice session Friday at Phoenix Raceway.
Busch, who was 11th fastest in the first practice session, posted a top speed of 129.510 mph in the session. He recorded 28 laps during period.
Ryan Sieg was sixth fastest.
Allgaier had the best 10-lap average at 128.490 mph.
Noah Gragson recorded the most laps in the session with 40.
Ross Chastain was fastest in the first of two Xfinity Series practice sessions Friday at Phoenix Raceway.
Chastain posted a top speed of 130.610 mph around the 1-mile track.
Keselowski and Kyle Busch are each making their first Xfinity starts of the year.
Kody Vanderwal suffered a mechanical issue on his No. 52 car during the session, but it did not cause a caution.