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With the Rams, 49ers, Chargers and Raiders all offering compelling storylines and the promise of the playoffs, 2018 is shaping up to be the most anticipated season ever for pro football in California. The MMQB’s Andy Benoit is diving into those storylines for our special offseason project: California Week. Check back regularly for more.

On a Saturday evening last December, Bengals defensive coordinator Paul Guenther drove downtown after work and picked up Jon Gruden from the Renaissance Cincinnati hotel. Gruden was in town to call Monday’s Bengals-Steelers game for ESPN. The two had known each other for years, and Guenther was friends with Jon’s brother Jay after their three seasons together in Cincinnati. The two went to dinner at a country club near Guenther’s house.

Gruden said he was thinking about returning to the NFL. Guenther had heard this before, but “he had a little different look in his eye this time.” When Guenther got home he told his wife, Patrice, that Gruden might be coming back—and if he did, he’d almost certainly want Guenther to coordinate his defense.

Guenther joined the Bengals in 2005 as a low-level assistant and was promoted to linebackers coach in 2012. When defensive coordinator Mike Zimmer left for the Vikings head job in 2014, Marvin Lewis pegged Guenther to take over. However, Zimmer had wanted Guenther to take that same post in Minnesota, and Jay Gruden, who got the Washington job that year, also offered his defensive coordinator position.

“My kids were just getting into school in Cincinnati, I didn’t want to leave. Zim was really upset,” Guenther says with a chuckle. “We didn’t talk for a little while there, but everything’s fine now.”

Four years later, as the 2017 season wrapped up, Guenther evaluated the Bengals’ landscape. Lewis was rumored to be on his way out. Some assistants’ contracts, including Guenther’s, were expiring. Changes were looming.

On New Year’s Eve, the Bengals finished their season with an upset win at Baltimore. Gruden was being linked to the Raiders job, and over the next few days Guenther started evaluating Oakland’s defense. It featured Khalil Mack, but also had a lot of needs. Gruden was contacting Guenther 15 times a day, going over possible assistants, schematic approaches, but, mostly pressing Guenther on whether he was “in or out.” If Guenther was out, Gruden needed to quickly find someone else.

But Guenther was waiting for the decision on Lewis. The Bengals are known to promote from within; if their 15-year head coach did not return, Guenther was a candidate to replace him.

Finally, on January 2, it was announced that Lewis would be back. Guenther told him about his opportunity in Oakland. Lewis and Bengals ownership offered him a long-term contract and pay raise, but Guenther decided it was time for a change. With Gruden on an unprecedented 10-year deal, the Raiders, even with a move to Vegas upcoming, had a more stable situation. Plus Gruden is an offensive guy; in many respects, Guenther would be the de facto defensive head coach. He’d had a similar role in Cincinnati, though that wasn’t the perception given Lewis’s background as a defensive coordinator.

“It was nothing against Cincinnati—I love that organization, I love those players, Marvin was great to me,” Guenther says. “It was just an opportunity to go somewhere else and see someone else do a head coaching job. Jon’s very unique in the way he runs things, it’s very different than what I was used to.”

Guenther told his two sons—Jake, 14 and Duke, 12—about the move, and on January 5 he officially became Oakland’s new defensive coordinator. The family that had only known Cincinnati would be moving 2,400 miles west.

“I’ve never really lived on the West Coast,” says Guenther, who hails from the Philadelphia area. “It was a total flip in lifestyle.”

Guenther (left) and Gruden.

Guenther (left) and Gruden.

On January 9, Paul and Patrice Guenther were in Oakland for Gruden’s introductory press conference. No team takes better care of its alumni than the Raiders, and that press conference had 10 Hall of Famers on-hand. It bordered on electrifying.

The next day, Guenther and Gruden checked into rooms at a Hampton Inn just down the street from the Raiders’ facility. For the next two weeks they interviewed assistant coaches. The Raiders’ facility is adjacent to the Oakland Airport, so candidates could be shuffled in every two hours. Gruden and Guenther would get in around 6 a.m. and interview candidates from 7 a.m. until 9 p.m.

Quality candidates can be hard to find; you’re limited to guys who are not under contract with other teams. “It’s guys you’ve met before, or someone we’ve already hired on staff has worked with the guy,” says Guenther. “Sometimes the coach is recommended. Sometimes you look at his team’s tape and say, ‘I remember they had a really good D-line there, or I remember those cornerbacks looking really well-coached. Let’s bring that coach in if he’s available.’”

Those first three days, whenever an assistant candidate was not being interviewed, Guenther was out with Patrice and their realtor looking for a house. Patrice had casually researched East Bay neighborhoods after her husband’s dinner with Gruden.

They found a place in Danville, Calif. It’s near a golf course—a plus given Jake's avidity for golf. Gruden was planning on living in Pleasanton, where he’d been in his first stint with the Raiders, but wound up renting a house a few doors down after Guenther told him about the subdivision. Now the two carpool to work.

There’s minimal traffic at 4 a.m., but it’s a chance for the head coach and coordinator to meet uninterrupted. Their driver is Jeff Leonardo, who used to drive AC/DC’s tour bus and, more recently, Gruden’s Monday Night bus. “Jeff always says, ‘Man I would love to have a camera in the car, like in Taxi Cab confessions,’” says Guenther. There’s an animated camaraderie and good-natured combativeness to those discussions, especially when Gruden and Guenther are debating players, and even more especially when they’re debating non-football topics.

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Guenther stayed in Oakland until March 1, when he went to the NFL combine in Indianapolis. Afterward, he drove two hours to his now-former home in Indian Hill, Ohio and picked up his wife and sons, who had everything ready for the movers. They flew together to their new home in California. Guenther had only seen his family once since early January. That’s because, after finalizing the coaching staff by the end of January, he spent February teaching those coaches his system. It’s a zone-based system known for it’s two-deep coverages and creative third-down blitzes.

“This is the third time as a coordinator I’ve done this,” Guenther explains. “My first year as a coordinator Vance Joseph was the defensive backs coach and Matt Burke was the linebackers coach. Jay Hayes was the D-line coach, he was the lone holdover. I had to teach Matt and Vance the backend stuff, the run fits, the coverages and all the details that go with it.” After the Bengals had a strong defense in 2015, Joseph left for the defensive coordinator job in Miami and Burke followed as his linebackers coach. So, in 2016, Guenther had to reinstall the system for new defensive backs coach Kevin Coyle and linebackers coach Jim Haslett.

A lot goes into teaching a coaching staff your system. For starters, coaches must know the purely schematic parts—in other words, the plays you call and the looks you give. These are written on the white board in the Raiders’ defensive meeting room, which doubles as Guenther’s office. The scheme features:

14 different D-line fronts
14 stunts and twists
15 coverages
20 blitzes out of a four-down front
26 blitzes out of double-A-gap fronts
19 blitzes out of “odd” fronts, which have either three or five men across the D-line, with one aligned directly over the center

There are also options for facing unusual offensive looks like four-receiver sets and wildcat. Plus there are 10-12 red zone packages and 18 end-of-game packages.

Many of these categories can be mixed and matched in different ways. And those mixings and matchings present different wrinkles. All assistant coaches must know not just the various wrinkles and base concepts, but how to teach them to players. The variables are infinite—trying to go over each one, Guenther says, would be like trying to pinpoint every place along a fairway and rough that a golf ball might land.

And so Guenther not only wants unified verbiage, with everyone calling everything the same thing, he wants many of the instructions unified. For example, Guenther told his coaches to have cornerbacks “kick-slide and not let the receiver go untouched.” A coach who tells a cornerback to just press and kick-slide is wrong; he must say, “Kick-slide and not let the receiver go untouched.” The more unified the verbiage, the easier it is to teach and learn deviated concepts.

All items are covered here. “I come in and I go on this board for about a week,” Guenther explains. “I’ll go through fronts; stances, alignments and initial keys; initial movements; run-pass responsibilities; how and where each player physically stands, be it a cornerback, nose tackle, etc. We do this for every defensive package, every formation. I take at least a week just to go through our base alignments.”

After the base stuff, it’s on to coverage. Then blitzes.

After that, Guenther and his coaches do the whole thing over again, this time a little faster. That’s Phase 2. In Phase 3, coaches are called up to the board to teach this stuff themselves. By then, it’s mid-March. With the weather a little nicer, the coaches go outside and walk through everything, with cameras and microphones recording it. This three-phase process follows a similar pattern that the Raiders use for players on OTAs.

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Speaking of players, Guenther and his assistants still had to learn theirs. They’d hold the daily system installation meetings from 7 a.m. until 3 p.m. The late afternoons and evenings were spent watching film on Oakland’s defense. Defensive coaches know everything about the players they coach and the offensive players they’ve faced in the last year or two. But they don’t have enough time to be fully up on defenders from other teams, so Guenther and his staff initially had just a surface level familiarity with the Raiders.

After watching all of the 2017 Raider games, Guenther watched every snap for each incumbent defender. He also watched practice snaps from early in the year and late in the year, looking to see if a player’s effort stayed high after the Raiders were eliminated. He watched in mostly chronological order, taking notes as he went.