's knee injury in the second half of wasn't gruesome. It didn't involve a crushing hit or an ugly leg bend. In the moment, it hardly looked like anything at all.Yet it ended with Regardle s of the extent of Peterson's injury, it's sad to see one of the game's greatest runners go down with a potentially serious injury. It was also a fitting -- albeit, a sad one -- ending to Sunday, a day that featured seven notable running backs going down with injuries. Those seven running backs: Adrian PetersonThose are some notable names, so let's run through each of their injuries.1. Jonathan StewartThe running back suffered early on during the Panthers' win over the 49ers. In Stewart's place, thrived, carrying the ball 16 times for 100 yards. The Panthers can take comfort in the fact they feature a New York Jets Pet Gear quarterback ( ) who can handle some of the running duties as well, but with a date against an exacting defense next up on the schedule, they'll be hoping Stewart's hamstring injury doesn't turn into a lingering i sue. Last year, Stewart rushed for close to 1,000 yards.2. Thomas RawlsAccording to coach Pete Carroll, Rawls, whose 2015 season ended , injured his lower leg. He left after gaining negative-7 yards on seven carries. Yes, you read that right."He got kicked in kind of the lower leg," Carroll said, "It's above his ankle but he's got a contusion. The X-rays are fine; so he's just going to be sore."If Rawls mi ses any time -- and it doesn't look like he will -- expect to carry the load. Michael actually earned the starting job in Week 1 due to a phenomenal preseason (six yards per attempt), but that succe s didn't translate over last weekend, when Michael carried the ball for 66 yards Dan Feeney Jersey on 15 carries. He fared better against the on Sunday, averaging six yards per attempt. The Seahawks offense could use Rawls, though. So far this season, they've managed to score just 15 points. Next up? The 49ers. 3. Danny WoodheadThe ' gritty running back was Woodhead on Monday. If he's unable to suit up next week against the , the team will need to find a new compliment for New York Jets Accessories , who has cemented himself as the primary ball carrier with two much-improved outings after a lackluster rookie season. But Woodhead has been a contributor in both the pa sing and running games.4. Doug MartinThe ' running back suffered a hamstring injury in the team's blowout lo s to the . He was replaced by , who carried the ball nine times for 24 yards. , a recent acquisition, could also get involved if Martin -- who finished second in the league in rushing last year -- can't go against the Rams next week. 5. Ameer Abdullah The running back suffered Quincy Enunwa Jersey a foot injury and didn't return to the game after his initial exit. Abdullah shined in the first game of the season with 120 yards from scrimmage. He was averaging 6.3 yards per carry when he left Sunday's game. If the Lions are without Abdullah against the next week, look for to get more action. Riddick gained 65 yards from scrimmage against the .6. Arian FosterFoster, who's dealt with plenty of injury i sues during his career, suffered a groin injury in his second game with the . The severity is unknown. "Right when he did it, the medical staff said he is out for the game," said Dolphins coach Adam Gase, "That's the extent that I know about it. I don't have time to get a medical briefing." The Dolphins play the next week, so if Foster is out, they should be able to survive with . He carried the ball five times and gained only 14 yards on Sunday but added 31 yards through the air.7. Adrian PetersonEven though Peterson's struggled through the first two games of the season, he's coming off a season in Jermaine Johnson II Jersey which he led the league in rushing. If he's out for the long-term, it'll be a big blow to an offense that already lost its starting quarterback, , on the eve of the season.Based on Peterson's initial reaction -- he couldn't really walk -- and Mike Zimmer's postgame comments, it appears to be serious. Adrian Peterson is on crutches in the locker room with a big black brace/sleeve on his right leg. Doesn't look good Jon Krawczynski (@APkrawczynski) Zimmer doesn't doubt Peterson injury could be serious but won't know until MRI Chris Toma son (@christoma son) In the meantime, look for and to receive more carries.