Looks fake.
Between the 8-9 second mark the projectile is on too high of a trajectory to hit the man standing there. It also disappears before it even comes close to making contact. I observe nothing hitting him. You can see it more clearly at 25% play speed.
At the 8-9 sec. 25 speed, it looks like when he trows the ball it doesn't hit the plexiglass or glass. The glass doesn't look like glass, it looks like its bouncing back into place. You have a quick eye to catch this.