He made the All-Rookie team in 2012, after returning two of his three interceptions for touchdowns and claiming the other one off Aaron Rodgers. He played his first postseason game that year, as part of a wild-card team that went 3-13 the year before.
Harrison Smith chuckles now about the simplicity of it all, how quickly success came despite how much he still had to learn.
"I was still looking at offenses and trying to pick up on things," he said. "But I was mostly kind of like a dog chasing a car."
At the end of the 10th year of an NFL career that includes as many Pro Bowls (six) as playoff games, Smith knows better. He is a safety for his time, adept at the blitz disguises and last-second coverage shifts used to fool quarterbacks who started learning how to beat Cover-2 defenses while playing Madden on an Xbox. He has 29 career interceptions, more than any active player who's spent his entire career at safety. He has nudged his way into comparisons with Hall of Famers such as Ed Reed, Troy Polamalu, John Lynch and Steve Atwater, the players Smith lionized as a kid in Tennessee.
None of it, not playing safety in an era of record-breaking offenses, not adapting to the rules changes that continue to make his job more complex and certainly not reaching the postseason, is as easy as it might once have seemed.
"You look back at what used to be good — like completion numbers for quarterbacks — and what they are today. All the Hall of Famers from back in the day would be, percentage-wise, at the bottom," he said. "And that's not because they wouldn't be great in this era, either. It's because the game's changed, the officiating's changed. I don't always like comparing eras. I just like to appreciate guys who are good when they played."
Smith, 32, signed a four-year extension in August worth just over $64 million, giving him a chance to finish his career in Minnesota and possibly reach the Hall of Fame, especially if he can earn a second All-Pro selection or win a Super Bowl.
The final years of his career, though, could mean a new coach if the Vikings fire Mike Zimmer, whom Smith credits with helping him understand defense at a deeper level and using him in a versatile role the safety relishes. He's not naive about where the game is going, either; he's tried sharing his views about how rule changes have made defenders' jobs difficult, but knows why he's not likely to get much of an audience.