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Englewood, Colo. — Peyton Manning isn’t giving Brock Osweiler any unsolicited advice this week as his longtime understudy prepares for his first NFL start.

“I’m not a coach, for one thing,” Manning said. “As I shared with him, he’s probably going to have a lot of coaches this week — some who aren’t coaches — that are going to be offering him tips of advice.”

So, Manning told Osweiler he’d be there for any questions he might have, “but I’m not going to be one of those extra voices in his ear.”

Manning will be too busy trying to get healthy from a variety of injuries — foot, shoulder, ribs — that led to his playing the worst game of his career on the same day he became the league’s all-time passing yards leader Sunday.

That prompted coach Gary Kubiak to make the switch with the Broncos (7-2) in a two-game slide heading into their game at Chicago (4-5).

Weeden waived

The Cowboys waived quarterback Brandon Weeden with the possibility of Tony Romo’s return this weekend after he missed seven games with a broken collarbone.

Weeden went 0-3 filling in for Romo and Matt Cassel was 0-4. It’s the longest slide by Dallas since the team lost seven straight while going 1-15 under Jimmy Johnson in 1989.

Romo is eligible to play again for Dallas (2-7), but it is not yet known if he will play Sunday at Miami (4-5). Coach Jason Garrett said Monday that the 35-year-old quarterback will practice this week.

If Romo “practices well,” Garrett says, he will play against the Dolphins.

Personnel dept.

The Jaguars are putting defensive tackle Sen’Derrick Marks on injured reserve. Marks tore the triceps muscle in his right arm at Baltimore on Sunday and will missed the final seven games. Tyson Alualu, Abry Jones and rookie Michael Bennett are expected to fill the void.

... Raiders linebacker Aldon Smith was suspended for one year, effective immediately, because of violations of the league’s substance-abuse policy, the Associated Press reported.

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