Detroit Lions wide receiver Calvin Johnson (81) breaks free for a 87-yard reception against the against the Dallas Cowboys in the first half  (AP Photo/Duane Burleson)

Week 8 of the NFL featured some record-breaking performances and more injuries. Oh, and the Kansas City Chiefs are 8-0.

Calvin Johnson’s career day helps Lions beat Cowboys 31-30

Johnson, the Detroit Lions wide receiver commonly known as “Megatron,” accounted for more than two-thirds of quarterback Matt Stafford’s 488 passing yards in the Lions’ 31-30 win over the Dallas Cowboys.

Johnson’s 329 receiving yards puts him at second-most yards receiving in one game in NFL history, which is only seven yards off Flipper Anderson’s all-time record.

The Lions (5-3) were down six points with a less than a minute left, but were able to march downfield in a drive that was capped by Stafford’s 1-yard lunge over the Cowboys’ (4-4) offensive line to seal the game.

Oakland Raiders quarterback Terrell Pryor set an NFL record with a 93-yard touchdown run on the opening snap of the game against the Pittsburgh Steelers (2-5.) The Raiders (3-4) won 21-18.

Kansas City Chiefs remain perfect

The Chiefs (8-0) ground out a 23-17 victory over the Cleveland Browns (3-5) to remain the league’s only undefeated team.

“We love it,” Chiefs quarterback Alex Smith said (via Associated Press.) “You want the stages to get bigger. That’s why you put all the work in. You want this opportunity. You want that honor.”

The Browns started former Washington Redskins quarterback Jason Campbell, who replaced the ineffective Brandon Weeden, in the competitive game. Campbell finsihed with 293 yards and two touchdowns for the Browns.

Injuries roundup

Several big name players suffered injuries during Sunday’s games.

Washington Redskins quarterback Robert Griffin III hurt his left knee – not the one that was surgically repaired in the offseason – after being hit by Denver Broncos defensive tackle Terrance Knighton, during the team’s 45-21 loss.

Griffin took the hit during a pass downfield that wound up getting intercepted. Knighton drove Griffin to the ground and landed on the quarterback with just more than five minutes left in the game.

Griffin was checked on the trainers’ table behind the bench, then got up and walked around without complications, but he didn’t re-enter the game out of precaution.

Griffin didn’t walk with a limp after the game either.

“The knee feels fine,” Griffin said. “I’m not sure which D-tackle it was. I think it was Knighton, who came in and landed all 300-plus pounds of himself on my leg and I think it really just scared me. After the docs checked me, I was fine and ready to go back in the game. I talked with Mike and Kirk was out there already, and we just thought it was smart to keep me off the field and just be ready to go next week.”
Mike Jones

Philadelphia Eagles quaterback Michael Vick left Philadephia’s 15-7 loss to the New York Giants with a hamstring injury. Vick is awaiting results of the MRI he underwent Monday.

The Miami Dolphins may lose wide receiver Brandon Gibson for the season, according to CBS Sports’ Jason La Canfora. Gibson had to leave the Dolphins 27-17 loss to the New England Patriots in the  first half.

Cincinnati Bengals linebacker Rey Maualuga and offensive tackle Andrew Whitworth both left the team’s 49-9 win over the New York Jets.

Maualuga suffered what the team announced was a concussion and didn’t return to the game. He did, however, tweet that ‘Everything will be ok.’

Whitworth injured his knee and FOX 19 tweeted that it will be reevaluated Monday.

Monday Night Football game: Seattle Seahawks at St. Louis Rams – ESPN, WSPZ (570 AM). Complete TV and radio listings.