Lonzo Ball collided with Houston’s James Ennis, turned his ankle and fell to the floor.
The Lakers are 5-8 without LeBron James, who is expected to practice fully Sunday as he works to return from a groin strain.
However, Walton isn’t expecting James or Rajon Rondo to play Monday against the Golden State Warriors.
The Rockets were shorthanded as well, missing point guard Chris Paul and center Clint Capela.
He joins Harden, Golden State’s Stephen Curry, Charlotte’s Kemba Walker, Oklahoma City’s Paul George and Portland’s Damian Lillard as the only players this season to have multiple 20-point quarters.
They didn’t score a basket again, but drew fouls on the Lakers nearly every trip down, making just enough free throws to keep them ahead.
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