In the young NFL season, the Atlanta Falcons were flying high behind a potent rushing attack.

Led by All-Pro running back and league-leading rusher Bijan Robinson , they averaged 181 rushing yards per game and were the NFL’s No. 2 team on the ground during a 2-2 start. Since then, that number has dropped to 88.5 as Atlanta has lost three of its last four.

“Those numbers are a lot different,” Robinson said, “And it’s our job to get it back to what it needs to be.”

Altogether, the Falcons average 134.8 rushing yards per game and have barely dropped, now at No. 4 in the NFL due to their hot start.

“We have to do a better job of getting back to who we are in the run game,” said offensive coordinator Tommy Rees . “It starts with me in what we call and how we design it.”

Opponents have begun catching on.

And the solution has been simple: Stack the box.

“Teams, after those couple weeks, decided they were going to play us a certain way,” Rees admitted.…