Peyton Manning out next Sunday with torn plantar fascia

Denver Broncos quarterback Peyton Manning, who was benched after throwing four interceptions in Sunday's loss, has a partially torn plantar fascia in his right foot, according to reports Monday.

Some Broncos players told ESPN's Adam Schefter that Manning had difficulty walking last week. According to ESPN, Manning has battled plantar fasciitis for weeks but is believed to have aggravated the injury against Indianapolis on Nov. 8. The injury resulted in a partial tear of his plantar fascia.

Coach Gary Kubiak replaced Manning with Brock Osweiler in the 29-13 loss to the Kansas City Chiefs in the third quarter.

Earlier Manning completed a 4-yard pass to running back Ronnie Hillman in the first quarter to become the NFL's all-time passing yardage leader, surpassing the previous high by Brett Favre. Joe Horrigan was at Sunday's game to receive the ball on behalf of the Pro Football Hall of Fame. The completion boosted Manning's career yardage total to 71,840. Favre finished his career with 71,838.

Manning was 5 of 20 for 35 yards and four interceptions and was sacked twice for Denver, which posted just 49 total yards through the middle of the third quarter. Manning's passer rating was 0.0 when Osweiler took over with 6:34 to play in the third quarter.

Manning was listed on the injury report two weeks ago with a right shoulder injury and was listed this past week with a foot injury. On Saturday, the Broncos updated their injury report to add a sore rib cage to the growing list of ailments for Manning.

Kubiak acknowledged after the game that he made a mistake by not sitting Manning after sore ribs were added to the foot and shoulder issues.

"To be honest, I was protecting him because I was worried about him," Kubiak said of pulling Manning. "I am disappointed in myself. This is on me. I should have probably made the decision not to play him."

At 39, Manning had one of the worst days of his career. His brother, Eli Manning, played with plantar fasciitis in 2009 and did not miss any games that season.

Kubiak said after Sunday's game that Manning would remain the starter if he is healthy enough to play. But Kubiak announced Monday afternoon that Osweiler will start at quarterback this Sunday against the Chicago Bears and Manning will begin the process of getting healthy.

"(I) told the team this week that Peyton is not going to play," Kubiak said Monday. "That Brock is going to play this week and that all of our full attention is going to be to getting Peyton back and healthy. That decision has been made. I know that's the best decision for him, to get him back and healthy, and we need to know where we're heading this week."

Manning said Sunday that he had been upfront with the team's training staff and Kubiak in the days leading up to the game.

"I have a really hard time using my injuries as an excuse. I have a hard time saying that's why I played badly," Manning said after the game.

"I thought I felt good enough to play, that's what I thought. Maybe that was the wrong — maybe that was a false feeling by me or whatever that was. ... I was honest with them with how I felt, thought I was good enough to play. Maybe looking back that was the wrong — I had the wrong indication by me. And by going out there trying to help the team, I ended up hurting the team. I'm disappointed about that."