No foreplay, let’s get right to it.
This is a well designed blitz. Notice the late Mike bail (showed A gap blitz to start), and the Will slides into the B gap, as the protection was likely called to move right with the pre-snap look. He doesn’t even appear to peek left, so that to me says that his job was to play-side right and he expected Laremy Tunsil to pick him up. Tunsil got called for holding here.
Ultimately, this pressure might get pinned on Josh Sitton, but I’m a little iffy on its attribution.