While the Carolina Panthers' offense showed promise in the team's 34-30 season-opening loss to the Las Vegas Raiders, its young, inexperienced defense clearly has some work to do.

The Panthers, who started three rookies on defense, allowed the Raiders to score on six of their first eight possessions — including three touchdowns — and failed to register a sack against Derek Carr. Carolina managed just five quarterback pressures and Carr was barely touched all afternoon.

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Las Vegas Raiders running back Josh Jacobs runs against the Carolina Panthers during the second half of an NFL football game Sunday, Sept. 13, 2020, in Charlotte, N.C. (AP PhotoBrian Blanco)

While the Carolina Panthers' offense showed promise in the team's 34-30 season-opening loss to the Las Vegas Raiders, its young, inexperienced defense clearly has some work to do.

Carolina Panthers wide receiver Robby Anderson, left, scores past Las Vegas Raiders safety Johnathan Abram during the second half of an NFL football game Sunday, Sept. 13, 2020, in Charlotte, N.C. (AP PhotoBrian Blanco)

“We have to get a pass rush,” Panthers coach Matt Rhule said.

Las Vegas Raiders head coach Jon Gruden talks with quarterback Derek Carr during the second half of an NFL football game against the Carolina Panthers Sunday, Sept. 13, 2020, in Charlotte, N.C. (AP PhotoBrian Blanco)

“Tackling and just communication,” Whitehead said of the areas that need the most improvement. “Whenever we didn’t communicate that is when things got a little shaky. If we continue to get better at the simple things and handle our business and execute our jobs, (if) you have 11 guys executing, we are going to play some good football.”

Carolina Panthers running back Christian McCaffrey scores ahead of Las Vegas Raiders safety Johnathan Abram during the second half of an NFL football game Sunday, Sept. 13, 2020, in Charlotte, N.C. (AP PhotoBrian Blanco)

One big surprise for the Panthers was the contributions of Robby Anderson, who had 115 yards receiving, including a 75-yard touchdown reception that gave the Panthers the lead briefly in the fourth quarter.

Carolina Panthers running back Mike Davis scores against the Carolina Panthers during the second half of an NFL football game Sunday, Sept. 13, 2020, in Charlotte, N.C. (AP PhotoMike McCarn)

With expected starter Eli Apple ruled out last week with a hamstring injury, the Panthers were pressed into starting rookie Troy Pride, while Rasul Douglas, who was claimed off waivers last week, replaced Jackson and had to play nearly every snap. Rhule praised Douglas for stepping up and playing well, including a big stop on third down that gave the Panthers the ball back and a chance to score a go-ahead touchdown in the fourth quarter.

The Panthers also allowed running back Josh Jacobs to run for 85 yards and three scores, reminiscent of last year's struggles when Carolina surrendered a league-high 32 touchdowns rushing.

Las Vegas Raiders running back Josh Jacobs runs against the Carolina Panthers during the second half of an NFL football game Sunday, Sept. 13, 2020, in Charlotte, N.C. (AP PhotoBrian Blanco)

Las Vegas Raiders running back Josh Jacobs runs against the Carolina Panthers during the second half of an NFL football game Sunday, Sept. 13, 2020, in Charlotte, N.C. (AP PhotoBrian Blanco)

“We have to get a pass rush,” Panthers coach Matt Rhule said.

Carr mostly used three-step drops, getting the ball out quickly to his playmakers. The Raiders QB completed 20 of 21 passes on throws of less than 10 yards, resulting in 170 yards.

In too many instances the Panthers failed to wrap up on tackles and twice linebacker Tahir Whitehead was called for defensive pass interference, including one costly call that led to the Raiders' go-ahead touchdown with 4:14 left in the game.

Carolina Panthers wide receiver Robby Anderson, left, scores past Las Vegas Raiders safety Johnathan Abram during the second half of an NFL football game Sunday, Sept. 13, 2020, in Charlotte, N.C. (AP PhotoBrian Blanco)

Carolina Panthers wide receiver Robby Anderson, left, scores past Las Vegas Raiders safety Johnathan Abram during the second half of an NFL football game Sunday, Sept. 13, 2020, in Charlotte, N.C. (AP PhotoBrian Blanco)

“Tackling and just communication,” Whitehead said of the areas that need the most improvement. “Whenever we didn’t communicate that is when things got a little shaky. If we continue to get better at the simple things and handle our business and execute our jobs, (if) you have 11 guys executing, we are going to play some good football.”

WHAT’S WORKING

Carolina scored on six of its first eight drives as well, and Teddy Bridgewater looked solid in his first start with the Panthers, completing 22 of 34 passes for 270 yards and one touchdown. Rhule said he believes Bridgewater is only going to improve the more he plays and gets familiar with his receivers. Remember, Bridgewater didn’t have a chance to play with his new teammates in the preseason due to COVID-19.

Las Vegas Raiders head coach Jon Gruden talks with quarterback Derek Carr during the second half of an NFL football game against the Carolina Panthers Sunday, Sept. 13, 2020, in Charlotte, N.C. (AP PhotoBrian Blanco)

Las Vegas Raiders head coach Jon Gruden talks with quarterback Derek Carr during the second half of an NFL football game against the Carolina Panthers Sunday, Sept. 13, 2020, in Charlotte, N.C. (AP PhotoBrian Blanco)

One big surprise for the Panthers was the contributions of Robby Anderson, who had 115 yards receiving, including a 75-yard touchdown reception that gave the Panthers the lead briefly in the fourth quarter.

WHAT NEEDS HELP

One of the biggest concerns the Panthers had heading into the season was at cornerback after the team allowed No. 1 cover man James Bradberry to leave in free agency. On Sunday, those concerns grew when returning starter Donte Jackson went down with an ankle injury and did not return.

Carolina Panthers running back Christian McCaffrey scores ahead of Las Vegas Raiders safety Johnathan Abram during the second half of an NFL football game Sunday, Sept. 13, 2020, in Charlotte, N.C. (AP PhotoBrian Blanco)

Carolina Panthers running back Christian McCaffrey scores ahead of Las Vegas Raiders safety Johnathan Abram during the second half of an NFL football game Sunday, Sept. 13, 2020, in Charlotte, N.C. (AP PhotoBrian Blanco)

With expected starter Eli Apple ruled out last week with a hamstring injury, the Panthers were pressed into starting rookie Troy Pride, while Rasul Douglas, who was claimed off waivers last week, replaced Jackson and had to play nearly every snap. Rhule praised Douglas for stepping up and playing well, including a big stop on third down that gave the Panthers the ball back and a chance to score a go-ahead touchdown in the fourth quarter.

“He was one of our unsung heroes,” Rhule said.

Pride gave up two big plays, including a 23-yard TD pass from Carr to Nelson Agholor.

Carolina Panthers running back Mike Davis scores against the Carolina Panthers during the second half of an NFL football game Sunday, Sept. 13, 2020, in Charlotte, N.C. (AP PhotoMike McCarn)

Carolina Panthers running back Mike Davis scores against the Carolina Panthers during the second half of an NFL football game Sunday, Sept. 13, 2020, in Charlotte, N.C. (AP PhotoMike McCarn)

STOCK UP

Yes, Christian McCaffrey is still plenty motivated.

The All-Pro ran for 96 yards and two touchdowns and proved he has no intentions of slowing down after signing a four-year, $64 million contract extension. On Sunday, McCaffrey joined Chuck Foreman (37 rushing, 18 receiving) as the only players with 25-plus rushing touchdowns & 15-plus receiving touchdowns in their first 50 career games in NFL history.

That makes it all the more perplexing why the Panthers didn’t give McCaffrey the football on a fourth-and-inches with the game on the line.

STOCK DOWN

The Panthers went with Joey Slye instead of Graham Gano this year because of his leg strength — and he responded with three made field goals on Sunday. The problem for Slye remains extra points. He missed one on Sunday. He missed four last season, so the distance — what would amount to a 33-yard field goal — seems to give him some issues.

INJURED

The Panthers are awaiting word on the severity of Donte Jackson's ankle injury and should know more on Wednesday.

KEY NUMBER

2 — Rhule wouldn’t say who his backup quarterback would be entering the season opener, but now we know. Former West Virginia star Will Grier was Carolina’s No. 2 QB on Sunday while P.J. Walker, who played under Rhule at Temple, was listed as inactive.

NEXT STEPS

Rhule said Carolina’s defense had at least 10 instances where it had problems communicating calls between the coaching staff and the players on the field. Some of that was human error and some of that was due to technology.

Rhule said the team will work to rectify those problems this week.

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