AFC Notes: Broncos, Chiefs, Raiders

Broncos

• Sports Illustrated’s Albert Breer identifies Broncos third-round C Lloyd Cushenberry as a potential impact rookie this year. 
• Broncos’ veteran RT Demar Dotson one-year, $1.5 million contract carries a base salary of $1.15M and $400,000 of it is fully guaranteed. He’ll receive a $100,000 roster bonus by Week 1, is eligible for $250,000 in per-game roster bonuses, and can make another $1.5 million through incentives. (Mike Klis)

Chiefs

• Sports Illustrated’s Albert Breer identifies Chiefs second-round LB Willie Gay Jr. as a potential impact rookie this year. 
• Chiefs signed C Daniel Kilgore. (NFLTR)
• Chiefs waived LB Emmanuel Smith with an injury designation.

Raiders

• Per the Athletic’s Vic Tafur, Raiders DE Arden Key entered training camp on the bubble but has really clicked with new DL coach Rod Marinelli: “He’s just like the grandpa that you always want who gives you whatever you want but asks a lot from you. You don’t really have a choice but to buy in with a guy like Coach Marinelli because you know you’re going to get better and you know you’re going to get pushed.”
• While Key has been impressive, Tafur says Raiders DE Carl Nassib, who signed for $16.75 million guaranteed the next two years, has been quiet during camp
• Tafur notes QB Marcus Mariota has not looked sharp and apparently is still dealing with a number of health issues from last year. 
• Raiders RT Trent Brown returned to practice on Wednesday. (Paul Gutierrez)