In the last two weeks, in victories over Oakland and Kansas City, the Broncos ran for 299 yards and 244 yards. Meanwhile, the top rushing team in the NFL (the Philadelphia Eagles) averages merely 172 yards per game on the ground. Denver’s grind-it-out performance against the Chiefs on Sunday was especially surprising given that the Broncos’ top two running backs, Willis McGahee and Knowshon Moreno, had to leave with injuries, and third-stringer Lance Ball gained only 96 yards. So how did the Broncos succeed? By mixing in traditional runs and college-style read plays, sometimes even using receiver Eddie Royal as a third option as a pitch man after he’d gone in motion.
Television football pundits often say this stuff can’t work for long in the NFL because pro defenses are too fast, and that they will just “load the box” and play “assignment” football against the reads and options. While there’s truth in this cliché, stopping Denver’s Tebow-ized offense is much more complicated than that. Football is governed as much by arithmetic as it is by physics. Though each side gets 11 guys, the defense “gains” a defender when Tom Brady or Aaron Rodgers hands the ball off and does nothing but watch the running back. The Patriots and Packers can get away with this because they are a threat at any moment to fake a handoff and throw downfield. That’s why the base defense for most NFL teams includes two deep defenders, safeties who are a lot more useful at defending passes than they are at stopping the run.