Hurdling

[Robert Goodman]

Originally Posted by Adam

Honestly, you'll need to ask the coaches who make the rules. But my guess is it has a lot to do with the neck injuries sustained by players who attempt and fail to hurdle their opponents.

That's probably it. Other things equal, you have to get farther off the ground to hurdle a player on his feet than to vault over one who has a knee on the ground. And there's a high likelihood you'll flip if you don't make it over his head.