Sunday's game between the Vikings and Redskins will be full of reunions.
They start with Mike Zimmer and Jay Gruden, two 2014 head coaching hires and, respectively, the former defensive and offensive coordinators of the Bengals. But the on-field connections intensify along the offensive and defensive lines, which likely will carry the biggest weight in deciding between two NFC teams jockeying for power.
Vikings defensive end Danielle Hunter and Redskins left tackle Trent Williams had looked forward to Sunday's game. The two offseason training partners know many of each other's tendencies, so they anticipated the real test within 50-60 game snaps.
But Williams hasn't practiced this week because of a knee injury that will eventually require surgery. His absence could dampen Hunter's upcoming matchup and Washington's hopes of protecting quarterback Kirk Cousins, who took six sacks in Seattle last week.
Coming to Washington is sack specialist Everson Griffen and a Vikings pass rush that ranks eighth in the NFL with 24 sacks. And they've been studying a lot. Six Redskins offensive linemen are on this week's injury report.
So Hunter is preparing as if Williams is playing.
"Literally, this is the most offensive line [options] we've had to study, 'cause of all the guys that have been playing," Hunter said Thursday. "We have no idea who is playing, so we just have to study all of them."
Vikings defenders are familiar with another Redskins tackle in T.J. Clemmings, a 2015 fourth-round pick who started 31 games for the Vikings' injury-riddled offensive lines the past two seasons. Clemmings has been the Redskins left tackle for the past two games because of injuries to Williams and top backup Ty Nsekhe.