Weidman should be worried.
Weidman should definitely be worried.
It makes me a little sad though, because Shotokan was the first martial art style that I ever studied. Traditional Japanese karate. I really enjoyed it too.
But, as Rockhold demonstrated quite clearly, it can only take you so far against a beast, and that is not very far at all.
Middleweight is a really exciting division right now, and yep Weidman should definitely be worried.