Who wins the collisions between Patrick Willis and Vonta Leach? The train wrecks are about to start. 49ers middle linebacker Patrick Willis is a fierce tackler who plays the game with zeal. Ravens lead blocker Vonta Leach is a throwback fullback, a classic head-knocker who roughed up Willis last year during a devastating isolation block that created a huge hole for Ray Rice to scamper through. Leach famously slammed Willis to the ground on the play last year in a Thanksgiving game at M&T Bank Stadium. Earlier this week, Willis vowed revenge. "I say, 'Bring it,'" Willis said. "Bring it and we'll [see] when the game's over what happened and took place." Leach laughed when told of Willis' comments, saying, "If that's how he feels about it, great. I love it. Lets play the game. I can't wait. I didn't get where I am by being shy."