Arian Foster left today’s blowout against the Dolphins with an Achilles injury, after he went down without contact accelerating out of pre-snap motion. As you can see above, he knew something was wrong as soon as he started to run. Almost immediately, he was ruled out for the game.

We will update this post when more information becomes available.

Update (4:24 p.m.): And Adam Schefter reports that it’s torn.