Per the Phoenix Suns:
Further evaluation has confirmed that Devin Booker has sustained a left groin strain. He will be re-evaluated in four weeks.
And via the Arizona Republic:
“You feel for Devin, but it’s the nature of our business,” Suns coach Monty Williams said. “It’s the nature of a guy who puts in a lot of work and lays everything on the line, you’re going to run into this from time to time. I’m actually grateful that it wasn’t worse. He has a tissue injury. When you look around the league, see guys who play with that kind of drive and passion and play that hard, it could be worse.”
Booker sustained the injury in the first quarter Sunday after he only played four minutes of the Christmas game. He went back to Phoenix right after the game was over for further evaluation.
