Stanford's defensive performance against Oregon on Nov. 17 was a thing of beauty.

In a 17-14 overtime victory, the Cardinal held the Ducks 157.6 yards below their season average, 127 yards below their season rushing average and, most important, 40.5 points below their season scoring average.

The Cardinal was disruptive. It didn't let Oregon's speed get around the edges. It controlled and filled gaps. It forced the zone-blocking Ducks' offensive line backwards. It tackled well, not allowing yards after contact or catch. It didn't let up for 60 minutes, as so many seemingly strong defensive performances against Oregon tend to. And when Oregon busted its one explosion play on the evening, backup safety Devon Carrington made sure it was a 77-yard Marcus Mariota run to the Stanford 15-yard line and not a 92-yard TD scamper that might have changed the game.

The man behind that defense is Stanford coordinator Derek Mason, a finalist for the Broyles Award as the nation's top assistant coach, and a guy who's name is bouncing around as a budding head coaching candidate.

What was the secret to the Cardinal solving the Ducks?

"We worked extremely hard at making sure we were going to be who we were," Mason said.

That's not as simple as it sounds, particularly against the Ducks, but it's something the Stanford players cited after the game as well.

"We took a greater focus on ourselves this time," linebacker Shayne Skov said after the Oregon game. "We didn't try to make too many adaptations to our own system. We were going to do what we do."

Yet what Stanford does has changed through the years. Significantly.

In 2009 -- Jim Harbaugh's third season -- the Cardinal was a plodding unit that ran a 4-3 and gave up 27 points a game. Enter Vic Fangio, who installed a 3-4. That same year, Mason took over the Cardinal secondary.

When Harbaugh and Fangio bolted for the San Francisco 49ers, new coach David Shaw handed the defense to Mason, who shared coordinator duties in 2011 with Jason Tarver, who is now running the Oakland Raiders' defense.

Let's just say Stanford's defense now looks sort of like its own thing, Mason's thing.

Explained Mason, "It's sort of morphed into something that is a little more …" Mason didn't finish the thought -- he started talking about defending spread offenses -- but we will: Funky, unorthodox, flexible. And effective.

Stanford's defense is talented, particularly its front seven, where a handful of guys have a chance to play on Sundays. It's notoriously physical, certainly the Pac-12's most smashmouth unit. And it's sound and disciplined. It doesn't blow a lot of assignments. That's very Stanford-y.

Yet Mason also hasn't been afraid to show some "what the heck is that?" looks to an offense, looks that seem to befuddle even experienced quarterbacks such as USC's Matt Barkley.

The results is this: Stanford is No. 1 in the nation in run defense (71.3 yards per game), sacks (4.42 yards per game) and tackles for a loss (9.25 yards per game). It's also 11th in the nation in scoring defense (16.92 ppg), despite playing a number of the nation's best offenses, something that can't be said for a number of other highly rated defenses. It's eighth in third down defense (29.53 percent).

"It's a containment run defense predicated on making offenses left handed and earning the right to rush the passer," Mason said.

In other words, the Cardinal stops the run, sacks your quarterback and gets off the field.

That's what happened last weekend against UCLA in Stanford's 35-17 win. The Cardinal held the Bruins to 73 yards rushing and recorded seven sacks and nine tackles for a loss.

It was textbook Stanford, which has held eight of 12 opponents below 100 yards rushing this season.

Yet Mason isn't completely believing what he saw in Game 1 with the Bruins. He said he thinks Game 2 on Friday in the Pac-12 championship game will feature a lot more offensive wrinkles from UCLA coordinator Noel Mazzone.

"There are some things they didn't show," Mason said. "It was obvious. I see it as a totally different game."

Mason specifically cited the quarterback run. Redshirt freshman Brett Hundley has rushed for 282 yards and eight TDs this season. His legs are weapons, and the Bruins didn't showcase them last weekend.

While UCLA and Stanford's potential first Rose Bowl since after the 1999 season are the immediate motivations and goals, Mason is aware that his name is bouncing around as a potential head coach. While it's clearly a future goal, he doesn't seem to be in too much of a hurry to race out of Palo Alto in order to chase the first opportunity that comes his way.

"I'm so in love with what is happening here with our players," he said. "I truly believe I am where I'm supposed to be."

Mason seems to like things on the Farm, where he's been growing a West Coast defensive power.