(Reuters) - Gary Kubiak has stepped down as head coach of the Denver Broncos a year after leading them to victory in Super Bowl 50 because of health concerns, the team said on Monday.
"As I told our team last night, this is an extremely difficult decision to step down as head coach," Kubiak said in a statement on the team's website.
"I love to work and I love football, but ultimately the demands of the job are no longer a good fit for me."
The Broncos closed out the season on Sunday with a 24-6 victory over the Oakland Raiders, leaving them with a 9-7 record and outside the playoffs to end any chance of defending the title they won last year against the Carolina Panthers.
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Throughout his coaching career Kubiak, 55, has had several health scares.
This season the former quarterback was taken to hospital with a migraine condition and missed a game while in 2013 as head coach of the Houston Texans he collapsed, leaving the field at halftime having suffered a mini-stroke.
In 10 seasons as a head coach Kubiak had an 82-75 win/loss record, including 21-11 in two campaigns with the Broncos.