The Phoenix Suns' All-Star guard Devin Booker injured his left hamstring on Tuesday night and the team says he won't return to the game against the Golden State Warriors.

The 25-year-old Booker has appeared in every game this season, averaging nearly 24 points per game. It was unclear when the two-time All-Star got hurt, but he went to the locker room in the second quarter.

The injury puts a damper on an intriguing early-season matchup. The Warriors have the NBA's best record at 18-2 while the Suns are 17-3 and riding a 16-game winning streak that's lasted more than a month.

Booker had 10 points and two rebounds before his injury. The Suns had a 56-54 halftime lead.

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