FLOWERY BRANCH, Ga. -- Falcons linebacker Sean Weatherspoon suffered a ruptured right Achilles against the Carolina Panthers on Sunday and is out for the remainder of the season, according to his agent Ryan Williams.
"I feel terrible for him," Williams wrote in an e-mail to The Atlanta Journal-Constitution on Monday.
Weatherspoon couldn't put any pressure on his right leg as he exited the field during the Falcons' 48-33 victory over the Panthers at the Georgia Dome.
Weatherspoon underwent tests to determine the extent of his injury Monday.
The Falcons are already thin at linebacker with De'Vondre Campbell, who suffered an ankle injury in during the closed portion of practice on Sept. 15, and Paul Worrilow (groin surgery) out.
Campbell was told by the team that he would be out 4-6 weeks. But just two weeks after the injury, Campbell was running with trainers last week. Campbell, a fourth-round pick from Minnesota, started the season-opener against Tampa Bay at weak-side linebacker.
Weatherspoon, who has an extensive injury history, was filling in for Campbell.
Weatherspoon's injury was announced as a calf/Achilles injury on his right leg. The team doctor had Weatherspoon lay down on a table as he tried to flex the Achilles on his bent leg.
"I think so," Campbell said when asked if he was close to returning. "It's getting better."
Campbell said he's going to try to play against Denver in Week 5.
"I may have to," he said because of the injuries. "They said I'm healing fast. I may have to come back. We'll see."
Weatherspoon missed the entire 2014 season with a torn Achilles and was injured Sunday in the fourth quarter of a 48-33 win over the Carolina Panthers.
Weatherspoon, 28, also had a Lisfranc foot injury in 2013.
The Falcons brought him back on a one-year, $1 million deal this season after he spent 2015 with the Arizona Cardinals.
Atlanta drafted Weatherspoon in the first round of the 2010 draft. He signed a five-year, $17.5 million deal as a rookie.