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When the Eagles have the ball

The Patriots must be wary of a balanced offense that tore apart Minnesota, which has a better overall defense than does New England. Forget about Nick Foles being a backup QB; his postseason performances, particularly in the NFC title game, have been strong.

Foles will try to get TE Zach Ertz involved early. Indeed, the Eagles have three tight ends they are comfortable going to, including Brent Celek and Trey Burton. That places an onus on safeties Devin McCourty, as reliable as any player at that position in the league, and Patrick Chung .

Philadelphia’s wideouts supposedly were a weakness heading into the season. Not quite. Alshon Jeffery is a clear No. 1 target with excellent hands and the ability to get open all over the field.

More:Underdog Eagles look to overcome odds one last time

New England’s defensive backs will need a bolstered pass rush, something the Patriots manufacture with a variety of players, from Trey Flowers to Geneo Grissom to Lawrence Guy to rookie Adam Butler to the rejuvenated LB James Harrison.

One thing the Eagles are sure to try to keep New England’s offense on the sideline is getting Jay Ajayi, former Patriot LeGarrette Blount and rookie Corey Clement some open space for runs. New England LB Kyle Van Noy, a former Lion, figures to have a busy day unless Philly falls behind.

When the Patriots have the ball

Tom Brady has won five Super Bowls, four times as game MVP. Never mind that he is 40, he’s playing as if he’s in his prime.

It’s essential that the Eagles get in Brady’s face throughout. That means DLs Fletcher Cox (91), the best defensive player in this postseason; Brandon Graham, a Detroit native and former UM star; rookie Derek Barnett; and former Patriot Chris Long must apply pressure. That’s doable but not easy against an offensive line without stars, but plenty of skill.

Philly must be alert not only for all of Brady’s targets — WRs Brandin Cooks, Danny Amendola, Chris Hogan, RBs James White and Dion Lewis — but for Lewis and White in the running game. Both are shifty and flexible and have Brady’s trust.

More:Detroit News predictions: Eagles vs. Patriots

The Eagles’ secondary, often criticized for its inconsistency, has gotten very stingy in the playoffs. Of course, CBs Ronald Darby, Jalen Mills and Patrick Robinson haven’t faced this kind of offense.

Perhaps most critical among all matchups is whether All-Pro TE Rob Gronkowski has recovered from a concussion. His confrontations with veteran S Malcolm Jenkins could be telling.

Special teams

Patriots K Stephen Gostkowski rebounded from a rough 2016. He made 37 out of 40 field goals in the regular season, going 4-for-4 on kicks of 50 or more yards. He is one of the league’s most clutch kickers and is third in career postseason points in NFL history.

Dion Lewis is the only player in this game to have returned a kickoff for a touchdown this season. He ranked fourth in the NFL with 24.8 yards per return.

More:Green: Amendola is latest of Brady's clutch catchers

Danny Amendola also is a threat on punt returns. He averaged 8.6 yards per return in the regular season, including a long of 40 yards, and had a big one against Jacksonville in the AFC title game.

Philadelphia’s Jake Elliott set a postseason club record with a 53-yard field goal and has longer range than Gostkowski. But he is less reliable on extra points, having missed four.

P Donnie Jones ranked 17th in net average and Kenjon Barner (38) filled in nicely after Darren Sproles was injured.

Coaching

Philly was in attack mode from the outset against Minnesota, and that’s a good reflection on Doug Pederson and his staff. Pederson knows he can’t back off against New England, and defensive coordinator Jim Schwartz is known for being aggressive.

More:Schwartz: Coaching Lions ‘an awesome time in my life’

Not much has to be said about a New England staff that is 5-2 in Super Bowls. A twist, not unprecedented but interesting, both coordinators, Matt Patricia (Detroit) on defense and Josh McDaniels on offense, are bound for head-coaching spots elsewhere.

Intangibles

The Eagles have never won a Super Bowl; their previous NFL title was in 1960. They have that extra edge that perennial underdogs would carry. Their confidence is soaring after they tore apart the stingiest scoring defense in the league for the conference title.

New England probably doesn’t need anything in this category. But the Patriots always seem to find some extra motivation, and it usually works.

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