An inside look at Sunday’s Giants-Eagles Week 14 matchup at MetLife Stadium.

You know the line so many players use about going against a highly skilled teammate every day in practice?

Iron sharpens iron. Here we go. Kelce, 35, will be a Hall of Famer one day. He is in his 11th season, and his 171 games for the Eagles passed Philly legend Chuck Bednarik’s franchise record for offensive linemen. He is an absolute stud in every way.

Lawrence’s fourth year with the Giants has been his best, with a career-high (and team-leading) six sacks and uncommon hustle for a 342-pound yet nimble behemoth. Watching these two knock heads every snap will be worth the price of admission.

The need to slow down this game and keep possession as long as possible is imperative for the Giants, and that means Saquon Barkley has to grind out yards. That has not happened recently. Jalen Hurts is on fire as a pass-run threat. Can Daniel Jones, without nearly as much support, use his right arm and both legs to keep things interesting?

Eagles 31, Giants 16

Downward bound: There are always explanations hidden underneath the numbers, and there are certainly reasons why Saquon Barkley’s production has taken a nosedive. His past three games: 44 rushing attempts, 124 yards — an average of 2.8 yards per carry. In addition to a lingering shoulder issue, Barkley is now dealing with a sore neck, which could lead to rushing attempts for Matt Breida.

“Unique player,” Eagles defensive coordinator Jonathan Gannon said of Barkley. “Obviously, he got picked that high for a reason. He has a very unique skill set. He’s explosive. He’s big. He’s strong. He can hit home runs. He can break tackles. We’re going to have to be on it.”

Dual threats: This has happened just twice before in the history of the NFL. The Eagles in their past two games rushed for 363 yards in a victory over the Packers, and the next week passed for 386 net yards in beating the Titans. The first team to exceed 350 yards in one game and 350 passing yards in the next was the Giants — in 1959. The only other team to accomplish this was the Los Angeles Raiders, in 1987. What do the Eagles do best? Whatever they want to, it seems.

Closed or business: How will the Giants complete many passes? Darius Slay and James Bradberry could be the best cornerback duo in the league. The Giants have Darius Slayton as their No. 1 receiver then Isaiah Hodgins and Richie James. Bradberry is second in the NFL (to Sauce Gardner of the Jets) with 14 passes defensed, and he and Slayton know each other well from the past two seasons together with the Giants.

“Hundreds, thousands, probably,” Slayton said of the practice reps he’s taken against Bradberry. “I’m sure he feels familiar with me, I know for sure I feel familiar with him.”

The blueprint: What they did made sense. The Giants knew they needed to surround Daniel Jones with more talent, so the previous regime hit the free-agent market to sign Kenny Golladay and used a first-round draft pick on Kadarius Toney. Swings and misses. Look at how the Eagles fortified their receiver corps for Jalen Hurts: Traded for A.J. Brown and traded up to select DeVonta Smith in the first round of the 2021 draft. How big was the deal for Brown? The Titans fired GM Jon Robinson last week after Brown torched his former team with two touchdown receptions.