There was concern when the Oakland Raiders hired Jon Gruden as head coach that the game had passed him by.

Gruden hadn’t coached since 2008, and in the fast-evolving world of the NFL, that’s a massive résumé gap.

Jon Gruden promised ‘old-fashioned’ approach

So far, Gruden, well — he isn’t doing much to dispel those concerns. Since taking over, he’s dismissed analytics, brushed off player conditioning concerns and touted the virtues of doing things “the old-fashioned way.”

“Man, I’m trying to throw the game back to 1998. … I’m not going to rely on the GPS’s and all the modern technology,” Gruden told reporters at a February press conference while doing his best doddering grandpa impression. “I still think doing things the old-fashioned way is a good way, and we’re going to try to lean that way a little bit.”

Gruden keeping things old-school

According to Raiders tight end Jared Cook, the old-fashioned way is exactly how things are being done so far in training camp.

“He’s bringing out film from like 1976 when you ain’t even think they had film,” Cook told the Las Vegas-Review Journal’s Michael Gehlken. “Grainy film where you can barely see the players.”

Apparently Gruden’s showing players the origin of his schemes, Gehlken reports.

He’s also showing players that he’s much older than them and doesn’t seem concerned with connecting on their level. At least when it comes to technology.

Maybe there is something to be gleaned from watching 40-year-old film, but hopefully for Gruden, he has a bank of modern schemes to lean on as well.

He doesn’t want to have to start thinking about his promise to decline his paycheck anytime soon.

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Jason Owens is a writer for Yahoo Sports. Follow him on Twitter.