Shaun Phillips remembers the very first time he chased down and started yapping with Philip Rivers.

Neither of them was even in the NFL yet.

Opponents at the 2004 Senior Bowl in Mobile, Ala., Phillips, now a Denver Broncos defensive end, recently recalled his introduction to Rivers, quarterback of the San Diego Chargers, which came on a play as Phillips followed Rivers out of bounds.

"I was like, 'You better run out,' " Phillips said. "And he was like, 'What are you going to do?' "

They didn't know then that they would wind up teammates in San Diego from 2004 through 2012 or, eventually, division rivals after Phillips signed with Denver as a free agent last April.

In Sunday's AFC divisional playoff game, they'll meet as opponents for just the fourth time — that 2004 Senior Bowl and two AFC West games this season. Finally allowed to hit Rivers, Phillips took his ex-mate down for two of his team-best 10 sacks in the regular season.