James will miss the Lakers' next two National Basketball Association games against the Detroit Pistons on Wednesday and the Utah Jazz two days later.
LeBron injured his groin during Lakers' Christmas day win against the Warriors, and was rushed to the locker room, where initial scans had shown that the injury was not a serious one and could de dealt with pretty quickly.
Utah has struggled offensively, averaging 107.8 points per game.
James was evaluated on Thursday by the Lakers' medical staff, who said the healing of his groin injury is progressing. Kyle Kuzma erupted for 41 points to lead the way in the win. The Los Angeles Lakers are allowing 34.4 percent shooting from deep and are grabbing 46.7 rebounds per game. Rubio is expected to miss the game due to a hamstring injury.
"I think I found my jump shot", Kuzma said after the game.
For the season, Kuzma's overall shooting numbers are up, to 47.1 percent from 45 percent, but his 3-point shooting numbers have dropped to 30.6 from 36.6 percent.
Lakers have gone onto win just 3 off the 8 games that they have played without LeBron, and desperately need him for the second half of the season, as all teams will now make a real surge for a playoff berth. Brandon Ingram is the third double-digit scorer and JaVale McGee is grabbing 6.8 rebounds.
The Jazz are coming off a 106-93 victory over Orlando Wednesday night when they had to overcome a 21-point first quarter deficit as well as a 19-point deficit in the third quarter, which they responded with a 25-3 run in the final eight minutes of the quarter. When the Lakers and Jazz met back in November, they combined for 173 points. The Los Angeles Lakers have lost five of their last eight road games. The two teams will meet a fourth time during the final week of the season on April 7 at Staples Center.