At least one of the passes shown in the video on the first page showed what in ancient times would have been considered a foul of sorts, or at least a sort of craven move. I don't know what the term was then, but I heard it called "a sweep".

Instead of aiming at the opponent's chest, or shield, or head, the jouster turns the tip of his lance farther left of the opponent's body, not trying for a direct blow but a lance-sideways impact, which is difficult or impossible to avoid. The object is to brush the opponent off his horse.