Eagles’ Jonathan Gannon explains how Brandon Graham’s injury impacts the defense

Philadelphia Eagles QB Jalen Hurts (1) passes the ball during the fourth quarter of the NFL game against the San Francisco 49ers at Lincoln Financial Field, Sunday, Sept. 19, 2021.

Philadelphia Eagles DE Brandon Graham (55) is attended to after being injured during the second quarter vs. the San Francisco 49ers at Lincoln Financial Field, Sept. 19, 2021.

The Philadelphia Eagles Cheerleaders perform during the game against the San Francisco 49ers at Lincoln Financial Field, Sunday, Sept. 19, 2021.

Philadelphia Eagles RB Kenneth Gainwell (14) dives for extra yardage as he is tackled by San Francisco 49ers LB Azeez Al-Shaair (51) during the first quarter at Lincoln Financial Field, Sunday, Sept. 19, 2021.

Philadelphia Eagles DE Derek Barnett (96) puts pressure on San Francisco 49ers QB Jimmy Garoppolo (10) during the first quarter at Lincoln Financial Field, Sunday, Sept. 19, 2021.

Luis Fernandez, of Reading, tailgates with friends before the Eagles home opener against the San Francisco 49ers at Lincoln Financial Field, Sunday, Sept. 19, 2021.

Philadelphia Eagles TE Dallas Goedert (88) catches the ball on a blocked punt from Philadelphia Eagles K Jake Elliott (4) during the second quarter of the NFL game against the San Francisco 49ers at Lincoln Financial Field, Sunday, Sept. 19, 2021.

San Francisco 49ers S Jaquiski Tartt (3) breaks up a pass intended for Philadelphia Eagles WR DeVonta Smith (6) during the first quarter vs. the San Francisco 49ers at Lincoln Financial Field, Sept. 19, 2021.

Philadelphia Eagles QB Jalen Hurts (1) fakes a handoff during the first quarter of the NFL game against the San Francisco 49ers at Lincoln Financial Field, Sunday, Sept. 19, 2021.

Philadelphia Eagles QB Jalen Hurts (1) throws the ball vs. the San Francisco 49ers during the first quarter vs. the San Francisco 49ers at Lincoln Financial Field, Sept. 19, 2021.

Philadelphia Eagles WR Jalen Reagor (18) appears to have scored a touchdown but it was called back after it was ruled he stepped out of bounds during the first quarter of the NFL game against the San Francisco 49ers at Lincoln Financial Field, Sunday, Sept. 19, 2021.

Philadelphia Eagles K Jake Elliott (4) kicks the field goal, with Philadelphia Eagles P Arryn Siposs (8) on the hold, to give the Eagles a 3-0 lead during the first quarter of the NFL game against the San Francisco 49ers at Lincoln Financial Field, Sunday, Sept. 19, 2021.

Philadelphia Eagles RB Miles Sanders (26) carries the ball during the first quarter of the NFL game against the San Francisco 49ers at Lincoln Financial Field, Sunday, Sept. 19, 2021.

The Philadelphia Eagles Cheerleaders perform during the game against the San Francisco 49ers at Lincoln Financial Field, Sunday, Sept. 19, 2021.

Philadelphia Eagles LB Eric Wilson (50) and DT Javon Hargrave (97) tackle San Francisco 49ers QB Jimmy Garoppolo (10) during the second quarter at Lincoln Financial Field, Sept. 19, 2021.

David Beak, of Telford, Pennsylvania, walks a SanFrancisco 49ers helmet before the Eagles home opener at Lincoln Financial Field, Sunday, Sept. 19, 2021.

Philadelphia Eagles WR DeVonta Smith (6) fights for yardage as San Francisco 49ers CB K'Waun Williams (24) makes the tackle during the first quarter at Lincoln Financial Field, Sunday, Sept. 19, 2021.

Eagles fans and 49ers fans from South Jersey tailgate before the home opener against the San Francisco 49ers at Lincoln Financial Field, Sunday, Sept. 19, 2021.

Philadelphia Eagles TE Dallas Goedert (88) runs back a blocked field goal during the second quarter vs. the San Francisco 49ers at Lincoln Financial Field, Sept. 19, 2021.

Eagles fans tailgate before the home opener against the San Francisco 49ers at Lincoln Financial Field, Sunday, Sept. 19, 2021.

Philadelphia Eagles TE Dallas Goedert (88) catches and carries the ball on a blocked punt from Philadelphia Eagles K Jake Elliott (4) during the second quarter of the NFL game against the San Francisco 49ers at Lincoln Financial Field, Sunday, Sept. 19, 2021.

San Francisco 49ers RB Elijah Mitchell (25) breaks free from the Eagles defense during the second quarter at Lincoln Financial Field, Sept. 19, 2021.

The Philadelphia Eagles Cheerleaders perform during the game against the San Francisco 49ers at Lincoln Financial Field, Sunday, Sept. 19, 2021.

San Francisco 49ers QB Jimmy Garoppolo (10) runs for a first down vs. the Philadelphia Eagles during the second quarter at Lincoln Financial Field, Sept. 19, 2021.

Philadelphia Eagles DT Fletcher Cox (91) gets a hand on San Francisco 49ers TE George Kittle (85) during the second quarter at Lincoln Financial Field, Sept. 19, 2021.

Philadelphia Eagles WR Greg Ward (84) looks to passthe ball of a fourth and goal during the second quarter vs. the San Francisco 49ers at Lincoln Financial Field, Sept. 19, 2021.

Eagles Cheerleaders perform during a game vs. the San Francisco 49ers at Lincoln Financial Field, Sept. 19, 2021.

Philadelphia Eagles LB Eric Wilson (50) and LB Alex Singleton (49) tackle San Francisco 49ers RB Trey Sermon (28) during the second quarter vs. the San Francisco 49ers at Lincoln Financial Field, Sept. 19, 2021.

San Francisco 49ers DL Kevin Givens (90) tries to tackle Philadelphia Eagles RB Miles Sanders (26) during the first quarter at Lincoln Financial Field, Sept. 19, 2021.

Eagles Cheerleaders perform during a game vs. the San Francisco 49ers at Lincoln Financial Field, Sept. 19, 2021.

Philadelphia Eagles RB Miles Sanders (26) looks for a block vs. the San Francisco 49ers during the first quarter vs. the San Francisco 49ers at Lincoln Financial Field, Sept. 19, 2021.

Philadelphia Eagles QB Jalen Hurts (1) takes the field for the NFL game against the San Francisco 49ers at Lincoln Financial Field, Sunday, Sept. 19, 2021.

Philadelphia Eagles QB Jalen Hurts (1) avoids San Francisco 49ers DL Dee Ford (55) during the first quarter vs. the San Francisco 49ers at Lincoln Financial Field, Sept. 19, 2021.

Philadelphia Eagles WR Jalen Reagor (18) avoids a San Francisco 49ers defender during the first quarter vs. the San Francisco 49ers at Lincoln Financial Field, Sept. 19, 2021.

Philadelphia Eagles WR DeVonta Smith (6) stretches for a pass as he is defended by San Francisco 49ers DB Deommodore Lenoir (38) during the first quarter vs. the San Francisco 49ers at Lincoln Financial Field, Sept. 19, 2021.

Philadelphia Eagles QB Jalen Hurts (1) passes th eball vs. the San Francisco 49ers during the first quarter vs. the San Francisco 49ers at Lincoln Financial Field, Sept. 19, 2021.

Philadelphia Eagles LB Alex Singleton (49) tackles San Francisco 49ers TE George Kittle (85) during the first quarter vs. the San Francisco 49ers at Lincoln Financial Field, Sept. 19, 2021.

The Philadelphia Eagles Cheerleaders perform during the game against the San Francisco 49ers at Lincoln Financial Field, Sunday, Sept. 19, 2021.

Philadelphia Eagles WR DeVonta Smith (6) is tackled by San Francisco 49ers CB K'Waun Williams (24) during the first quarter vs. the San Francisco 49ers at Lincoln Financial Field, Sept. 19, 2021.

Eagles coach Nick Sirianni watches play vs. the San Francisco 49ers during the fourth quarter at Lincoln Financial Field, Sept. 19, 2021.

Philadelphia Eagles T Jordan Mailata (68) reacts after watching a replay on a fumble recovery that was reversed on an Eagles penalty vs. the San Francisco 49ers during the fourth quarter at Lincoln Financial Field, Sept. 19, 2021.

Eagles coach Nick Sirianni pleads his case to the referees vs. the San Francisco 49ers during the fourth quarter at Lincoln Financial Field, Sept. 19, 2021.

Philadelphia Eagles S K'Von Wallace (42) reaches after stopping San Francisco 49ers RB Elijah Mitchell (25) during the fourth quarter at Lincoln Financial Field, Sept. 19, 2021.

Eagles Cheerleaders perform during a game vs. the San Francisco 49ers at Lincoln Financial Field, Sept. 19, 2021.

Philadelphia Eagles LB Davion Taylor (52) celebrates after tackling San Francisco 49ers RB Elijah Mitchell (25) during the third quarter at Lincoln Financial Field, Sept. 19, 2021.

Philadelphia Eagles TE Dallas Goedert (88) reaches for the end zone vs. the San Francisco 49ers during the fourth quarter at Lincoln Financial Field, Sept. 19, 2021.

Philadelphia Eagles DT Fletcher Cox (91) tackles San Francisco 49ers RB Elijah Mitchell (25) during the fourth quarter at Lincoln Financial Field, Sept. 19, 2021.

Philadelphia Eagles OL Landon Dickerson (69) lifts up RB Kenneth Gainwell (14) after scoring on a two point conversion during the fourth quarter at Lincoln Financial Field, Sept. 19, 2021.

Philadelphia Eagles OL Landon Dickerson (69) hoists Philadelphia Eagles RB Kenneth Gainwell (14) into the air after Gainwell completed a 2-point conversion during the fourth quarter of the NFL game against the San Francisco 49ers at Lincoln Financial Field, Sunday, Sept. 19, 2021.

Philadelphia Eagles QB Jalen Hurts (1) dives for yardage as he runs the ball during the fourth quarter of the NFL game against the San Francisco 49ers at Lincoln Financial Field, Sunday, Sept. 19, 2021.

Philadelphia Eagles QB Jalen Hurts (1) runs the ball during the third quarter of the NFL game against the San Francisco 49ers at Lincoln Financial Field, Sunday, Sept. 19, 2021.

Philadelphia Eagles QB Jalen Hurts (1) scores a touchdown during the fourth quarter of the NFL game against the San Francisco 49ers at Lincoln Financial Field, Sunday, Sept. 19, 2021.

Eagles Cheerleaders perform during a game vs. the San Francisco 49ers at Lincoln Financial Field, Sept. 19, 2021.

Eagles defensive coordinator Jonathan Gannon went into the defensive meeting room Tuesday without one of his cornerstone players, defensive end Brandon Graham.

Graham, who had eight sacks last season and was instrumental in the team’s run defense and early defensive success this season, ruptured his Achilles tendon in Sunday’s 17-11 loss to the San Francisco 49ers, ending his season.

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As Gannon was addressing Graham’s teammates, he explained that they would have to step up and replace not only Graham’s production on the field but his verbal and non-verbal leadership in the locker room.

“From a leadership and a character and attitude standpoint, I think collectively, everyone has to try to fill that void because not one guy is going to be able to do that,” Gannon said Wednesday. “We do feel good about the leaders that we still have within the defense, really good about the leaders that we have. From the standpoint of the roles he was playing, there are guys who will have to step in and fill where he was playing. We feel good about the guys that are going to do that.”

The Eagles used Ryan Kerrigan to replace Graham after Graham left the field. Kerrigan, who missed a lot of training camp due to a hand injury, played 32 snaps Sunday. The 11-year veteran cannot stay on the field forever, meaning the Eagles will most likely have to shift one of the defensive ends who typically play on the right side of the line over to the left to spell Kerrigan.

Gannon said a potential shift would not be a problem because the team already cross-trains several defensive linemen at different spots along the line.

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“How our guys are trained right now since we’ve been here with Coach (Tracy) Rocker and Coach (Jeremiah) Washburn, they feel pretty good plan multiple spots and on both sides,” Gannon said. “I feel good about still being able to move people around to get the best matchup, whatever it dictates for that week.”

One of the players who could be making the switch is Josh Sweat. Sweat recently signed a three-year, $40 million contract extension with the team. However, Sweat only played 28 snaps against the 49ers. Gannon said that it was not a reason to be concerned about how much Sweat was being used, stating it was more of how the game unfolded and the personnel packages that needed to be used.

“When he was in the game, he affected the game in a positive way and played winning football,” Gannon said. “You will continue to see Josh Sweat do that. From the standpoint of what he’s been since we’ve been here, he plays the run extremely well. He can rush, and he’s a great dude. Just like as he’s been doing, he’s going to continue to play winning football for us, which we need him to.”

Whoever lines up at left defensive end will have the opportunity to have a significant impact on Monday night’s game against the Dallas Cowboys. Cowboys starting right tackle La’el Collins was suspended by the league for five games because Collins allegedly missed his drug testing appointments. According to ESPN’s Adam Schefter, Collins is appealing the ruling.

If the suspension is upheld, second-year tackle Terence Steel will face either Kerrigan or Sweat. Last week, Steel gave up three hurries in the Cowboys’ 20-17 win over the Los Angeles Chargers. Given the pass-rushing ability that Sweat and Kerrigan possess, it could force Cowboys quarterback Dak Prescott to rush his throws or begin to move out the pocket quicker than he anticipates, especially seeing pressure coming from his front side.

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Chris Franklin may be reached at cfranklin@njadvancemedia.com.

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