VIDEO: Khalil Mack dominates the Cardinals' offensive line

It's a terrifying proposition for left tackles everywhere that Oakland Raiders outside linebacker Khalil Mack is just entering his second professional season.

Mack dominated against the Arizona Cardinals during the first half of Sunday's preseason game, recording two sacks, three tackles, and a number of hurries.

Arizona may need to employ a double-team against Mack, although it'll probably be futile against this unstoppable force.