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Zion shaken up after taking hard fall on blocked dunk (0:43)

Zion Williamson writhes on the ground in pain after falling hard while attempting a dunk. It was 0: 43.

2:50 PM ET

Brandon is in the NBA's concussion protocol after colliding with a teammate in Sunday's loss to Utah.

While there is no timetable for his return, he will have to clear a number of steps before he can resume basketball activities.

Coach Willie Green said he expects Zion Williamson andHerb Jones to be questionable for Tuesday's game against the Dallas Mavericks because of injuries they sustained in Sunday's game.

Green said Monday that he was thankful that there were no serious injuries.

It doesn't seem like Z's fall is going to be that bad. It's sore. There are bones. Brandon was struck in the face. Green said thatHerb's knee. We have to keep an eye on it over the next few days.

Green initially said that the forward wasn't in the concussion protocol, but later said that he was.

Green said that everything was fine after Jones had an x-ray on his knee.

Green said they would see how they felt once they went through shootaround.

With 8:07 left in the fourth quarter, Zion took a hard fall when his dunk attempt was blocked. He thought he had a slam after blocking the shot on the other side. He landed on his backside after getting his hand on the ball.

He initially tried to stay in the game but was taken out of the game one possession later. Green said that he couldn't return because of the injury.

In the first quarter, Naji Marshall tried to steal a pass as he was hit by his teammate. The Pelicans called a timeout after Marshall's hand made contact with Ingram, because they wanted to make sure he didn't stay in the game.

After being evaluated by the team trainer, he seemed to be fine and told some teammates on the bench that he was. He came back in at 6:33 of the second quarter, but didn't call to the bench for a while. Instead of going to the sideline, he went to the locker room.

The Phoenix Suns, LA Clippers and Los Angeles Lakers are on the road for the next three games.