What has suddenly become unclear is whether that decision rests solely with Marrone.
The second-year coach raised questions after practice Wednesday as to whether he has the last say on determining his starting lineup.
Without specifying who, Marrone on two instances referred to "somebody else" as having a potential say.
Marrone's comments come at a time when Buffalo is in jeopardy of extending the NFL's longest active playoff drought to a 15th consecutive season. The franchise is entering its first off-season with new owners Terry and Kim Pegula, who purchased the team in October after Hall of Fame owner Ralph Wilson died in March.
Buffalo (7-6) plays host to Green Bay (10-3) on Sunday.
Helping out the birds
The team's $1-billion stadium due to open in 2016 depends on vast windows to create an airy feeling. But bird lovers have asked the team to change out clear glass with "fritted" glass that they say is safer for birds.
The Vikings have resisted, saying they don't want to obscure sunlight. But Vice President Lester Bagley told the Star Tribune the team is open to testing the clear film.
Michele Kelm-Helgen, chairwoman of the authority overseeing stadium construction, said such a study might start during bird migration season in various locations in Minnesota. The stadium would be included in tests after it is built.
The Houston Texans placed top overall draft pick Jadeveon Clowney on injured reserve two days after he had microfracture surgery on his right knee. The surgery was the second this season for the outside linebacker. He had arthroscopic surgery on the same knee after being injured in Week 1. ... New York Jets wide receiver Percy Harvin is dealing with a sprained left ankle that had him in a walking boot earlier in the week, but he was optimistic about his chances of suiting up against the Tennessee Titans on Sunday. "I feel pretty good," Harvin said. "I definitely think I will be playing this week. Rehab has been going fairly well. It shouldn't be a problem." ... The Jacksonville Jaguars placed leading rusher Denard Robinson on injured reserve with a mid-foot sprain.