ATLANTA — Strong starts on offense have helped the Atlanta Falcons remain one of the NFL’s three undefeated teams.

Poor starts on defense have left the Carolina Panthers in an early hole in the NFC South.

Each team is placing an emphasis on a successful opening series when the teams meet today (1 p.m., WTAT-TV/Fox).

Quarterback Matt Ryan’s accurate passing is a big reason the Falcons (3-0) are the only NFL team to score touchdowns on opening possessions of the first three games.

The Panthers (1-2) have been equally consistent in their slow starts on defense. Carolina has allowed opposing teams to score on the first possession of all three games.

“We have to come out with better intensity and understand the situation and know that we need to go out and set the tone early and not try to wait until the second series,” said Panthers linebacker Thomas Davis. “We have to go out and jump on these guys and not try to do too much.”

Fast starts have always been an emphasis for Falcons coach Mike Smith. Atlanta is 37-9 in five seasons under Smith when scoring first.

Ryan was viewed as a rising star in his first four seasons. Now he is being mentioned among the league’s top passers as he has flourished in first-year offensive coordinator Dirk Koetter’s system.

The Falcons no longer are a run-first team. Ryan has emerged as the NFL leader in passer rating and completion percentage and he’s tied with Buffalo’s Ryan Fitzpatrick and Pittsburgh’s Ben Roethlisberger for the league lead with eight touchdown passes.

The Panthers can’t blame all their troubles on early defensive lapses. Second-year quarterback Cam Newton completed only 16 of 30 passes with three interceptions and no touchdowns in last week’s 36-7 home loss to the Giants.

“It’s a loss,” Newton said this week. “I don’t like losing and hopefully we can come back and I can do my part Sunday.”

Newton has five interceptions and two touchdown passes so far, but all the news isn’t discouraging. Despite his poor numbers last week, Newton has completed 63.9 percent of his passes and has 81 yards rushing with a team-leading two touchdowns.

The Falcons, who have won their first three games for the first time since 2004, have feasted on the AFC West, beating Kansas City, Denver and San Diego.

Atlanta beat the Chargers 27-3 in San Diego last week as Ryan completed 30 of 40 passes for 275 yards with three touchdowns and one interception.

Ryan has only one interception with his eight TD passes.

“Ryan is playing extremely well and making a lot of good decisions,” said Panthers defensive end Charles Johnson.