The Falcons' offense appeared to be hitting their stride heading into the Week 7 matchup with the Rams.
That changed on Sunday afternoon at Mercedes-Benz Stadium when Wade Phillips and the Rams' defense gave Atlanta all they could handle.
"We didn't play well in any areas of the game on offense," offensive coordinator Dirk Koetter said on Monday. "We played our worst game of the year. We didn't execute well across the board."
The Falcons were averaging 22.5 points per game through six weeks. Atlanta mustered just 10 points against the Rams, the second time they've done that all season.
Atlanta's offensive line struggled to protect Matt Ryan as he was sacked five times and pressured nine times. The Falcons also couldn't get the run game going, finishing the day with 38 yards on the ground.
Defensive end Dante Fowler had three of the Rams' five sacks.
"We got beat on the edge," Koetter said.
The Falcons were 3-of-12 on third down, an area they had worked to improve over the past few weeks to improve.
Across the board, it wasn't a performance you'd expect to see from the Falcons' offense led by Ryan and wide receiver Julio Jones.
The only touchdown of the game came from Matt Schaub in the final minutes of the fourth quarter after Ryan left the game with an ankle injury.
Falcons coach Dan Quinn said they don't know how much time Ryan will miss and they won't put him back out on the field until he's fully ready.