The game-changing interception Rivers threw in the fourth quarter brought home his diminished physical ability. Rivers fluttered an out route to slot receiver Josh Downs, leaving plenty of time for Jacksonville cornerback Jarrian Jones to undercut it for a pick.

“I wasn’t fooled by any means,” Rivers said. “It was just a bad throw.”

The throws shouldn’t be the takeaway from these three starts.

Rivers wasn’t fooled. By just about anything. Five seasons after he last started in the NFL, Rivers flew back into Indianapolis on the whim of Shane Steichen and Chris Ballard, stepped back into a quarterback meeting room and immediately knew more than almost anybody else in the league.

In the history of the NFL, for that matter. Only a few quarterbacks have ever been able to process information at the line of scrimmage like Rivers, a 44-year-old who kept shocking the Colts with his ability to see what was coming.

Wide receiver Alec Pierce got a taste in Rivers’ first start. When Pierce looked at Seattle’s defense, he saw the Seahawks in a pressure look the Colts had seen on tape, and he told Rivers the blitz was coming.

Rivers shrugged it off, told Pierce the Seahawks were bluffing.

The 44-year-old was right, just like he was right on Monday night, when San Francisco showed a look that offensive coordinator Jim Bob Cooter was sure indicated a blitz from the right, leaving him shocked when Rivers shuffled the protection to the left.

Rivers was right again. He’s almost always right, looking across the line at defenses like Keanu Reeves looking into the lines of the matrix.

“It’s really just that he’s probably seen it before, so it’s probably not even a matrix,” Colts running back Jonathan Taylor said. “I’ve seen this a couple years ago, and he’ll probably tell you the exact game, the drive, the actual down it was. So, he’s seen a lot of ball, so it’s not much you can throw at him at all.”

Taylor’s right. Rivers never forgets anything.

What makes him special is that he can access all of that information in a split second. When a coach talks about a quarterback going through his progressions, he’s often talking about a decision the quarterback makes after the snap.

Rivers goes through his progressions before he’s even finished calling the cadence.

That’s how a 44-year-old quarterback with diminished arm strength can complete 63% of his passes over three games, throwing four touchdowns and three interceptions to post an 80.2 quarterback rating, numbers that aren’t impressive for a 30-year-old starting quarterback but take on new meaning for a man who’s been calling plays at the high school level for five years.

“For Philip to come off the couch with a couple days of practice, go into Seattle and take them down to the wire, then come in here, and the past two weeks, I’ve thought he played well,” wide receiver Michael Pittman Jr. said. “That just says a lot about him, that he can still go toe-to-toe with some of the best teams at, what is he, 40-something? Phil’s up there.”