Suns rookie Ryan Dunn will get his second straight start for Booker. Grayson Allen continues to go through concussion protocol as he's out Friday against Dallas. Budenholzer said Allen is "close," but said his status for Saturday's game is unknown.

Phoenix Suns guards Devin Booker and Grayson Allen didn't participate in Tuesday's practice, which essentially was a shootaround going into Wednesday's Christmas Day rematch against the Denver Nuggets at Footprint Center.

Phoenix Suns guard Grayson Allen took an elbow to the head in the third quarter of Phoenix's loss Detroit Pistons Saturday night and did not return after being evaluated for a concussion. Suns coach Mike Budenholzer provided an update on the reserve guard postgame: "We're monitoring him for a concussion,

Ahead of the' 110-100 Christmas-day win over the Denver Nuggets, coach Mike Budenholzer provided an update on Devin Booker, who has now missed Phoenix's last three games with a left groin injury.

The Phoenix Suns on Tuesday ruled out Devin Booker, Grayson Allen and Bol Bol for their Christmas Day game against the Denver Nuggets.

The Phoenix Suns (15-14) host the Dallas Mavericks (19-11) on Friday, airing on Arizona's Family (Ch. 3 TV) at 7 p.m. This is the first of back-to-back games for both teams, and the second of their three-game season series.

Dallas star Luka Doncic (calf strain) is out for at least a month. The Suns are led by Kevin Durant and Bradley Beal without Booker, and the Mavericks' other top players are Kyrie Irving and Klay Thompson.