Halapoulivaati Vaitai is already a huge reason why the Eagles are playing for the NFC Championship. Now, he might be the key to reaching the Super Bowl.
The Eagles couldn't have made it this far without Vaitai, who took over at left tackle way back in Week 7 when Jason Peters was lost for the season. But on Sunday, Peters' replacement faces one of his stiffest tests to date in Vikings right defensive end Everson Griffen.
"He's a game-wrecker," Eagles coach Doug Pederson said of Griffen this week.
Complete coverage of the Philadelphia Eagles and their NFL rivals from NBC Sports Philadelphia.
Recently named to his third consecutive Pro Bowl, Griffen set career highs with 13.0 sacks in 2017, finishing tied for fourth in the NFL. It was the third time in four seasons the eighth-year veteran went into double digits, and he's still going strong, getting to the quarterback once more in the Vikings' divisional round playoff win over the Saints.
Griffen is one of the most dangerous pass rushers in the league. Vaitai was a minimally experienced backup until mid-October. On paper, the matchup looks like a serious concern.
"Fast, strong guy," Eagles right guard Brandon Brooks said of Griffen. "He's played in this league for years now, got experience.
"But V is big and strong too. He has not as much experience, but got more experience than a lot of younger guys his age with the games he started last year and games he's playing this year, so I know V is up to the challenge."
A fifth-round draft pick in 2016, Vaitai has 17 NFL starts under his belt and 11 this season, including playoffs. The results are somewhat mixed, though the Eagles have an 8-2 record since the 24-year-old stepped in at left tackle.
Vaitai hasn't made anybody forget about Peters - a future Hall of Famer - but the second-year player is holding his own and improving steadily.
"He's got a lot better, especially from last year to this year," left guard Stefen Wisniewski said. "His technique has improved greatly. I think his football IQ has gone up. He's really worked hard to get better every day, and his pass blocking has improved tremendously."
This week perhaps more than any other, the Eagles can't afford a liability at the tackle position.
The gravity of the situation is obvious, with a trip to the Super Bowl on the line. Plus, in addition to Griffen, the Vikings boast the league's No. 1 defense both in scoring and yardage. Points and positive drives will be hard enough to come by for the Eagles without consistent disruption at the line of scrimmage (see story).
Naturally, Pederson plans to provide assistance for Vaitai. However, the Vikings are also known for using exotic double A-gap blitzes up the middle and other overload pressure packages, and the Eagles can't double-team one guy the entire game.
There will be occasions when Griffen is one-on-one, and it's on Vaitai to shut him down.
"It's a lot of respect for him," Pederson said of Griffen. "He can change the ballgame.
"He knows that tight ends are going to help over there, backs are going to help over there, slide protection. It's not rocket science. But Big V has had a challenge all season. We've faced some tremendous defensive ends all season long, and this will be his greatest challenge in this game. I have a lot of confidence in V and what he's done this season."
Whether out of comfort or necessity or resignation, at this point, the Eagles seem fine with the idea of Vaitai versus Griffen. Right tackle Lane Johnson doesn't see the potential mismatch as a big deal at all.
"We'll have some chip pros and some slams tied in, but other than that though, I think he'll be alright," Johnson said. "Just another guy in there."
Vaitai has often looked like "just another guy" this season, in varying senses of the phrase. He's experienced his share of struggles, then been able to quietly blend in with a strong offensive line for long periods.
Whichever Vaitai the Eagles get on Sunday could go a long way toward determining the outcome on Sunday.