• Guard stretchered off court after apparent serious injury

• Team will learn more about status on Monday

Shai-Gilgeous Alexander scored 34 points and the Oklahoma City Thunder stayed undefeated but they lost All-Star guard Jalen Williams to what appeared to be a serious leg injury during their 108-101 victory over the Los Angeles Clippers on Sunday night.

Oklahoma City won their third straight game to start the season but lost three players to injury, including Williams, who went down hard on a drive to the basket with 1:14 left. The guard’s left leg gave way as he landed and his foot bent at an unnatural angle. The 25-year-old left the court on a stretcher with towels covering his injured leg. He covered his mouth with his hands when he looked down at the injury while Gilgeous-Alexander and players on both teams appeared to be in shock.

• James makes winning Sixers debut as Knicks fall

• Gilgeous-Alexander scores 32 as Thunder beat Spurs

• Pistons erase 22-point deficit to stun Celtics

The Philadelphia 76ers sent an opening-night message that they intend to challenge the New York Knicks for the NBA title after adding LeBron James and Jaylen Brown, rallying for a 106-100 victory.

Tyrese Maxey scored 28 points and Brown had 19 points, eight rebounds and six assists in his first game since being acquired from Boston. James began his NBA-record 24th season with 14 points, nine rebounds and six assists.