We don't know where it happened, but there's video on YouTube from a women's volleyball match, where one of the players takes a spike to the FACE.

 

 

--Then the ball bounces off her and lands on the sideline . . . where someone runs by and TRIPS on it.  It all happens in about two seconds.

 

 

(--Search for "Power Volleyball Spike Takes Out One Player and One Guy on Sideline."  It happens at :12.)