Mike Tomlin was the Steelers head coach in 2007. That was his first year as head coach.
That was Fritz Pollard who was head coach of the Akron Pros in 1921. As far as 'modern day' NFL goes, that would be Art Shell who became head coach of the Los Angeles Raiders in the 1989 season.
His first season as head coach was 2007.
The Broncos' first year of play was 1960 and their head coach was Frank Filchock. They ended the 1960 season with a 4-9-1 record.
Bill Cowher's first season as head coach of the Pittsburgh Steelers was 1992.
He was named the Head Coach of the Edmonton Oilers, June 22nd, 2000.
His first season with the Packers was in 1959.
In the early years of the NFL there were numerous players/coaches so any given year you had quarterbacks listed as head coach also....
Through Super Bowl XLIII, that has happened twice: 1) Don McCafferty, Baltimore Colts - won Super Bowl V in his first year as head coach. 2) George Seifert, San Francisco 49ers - won Super Bowl XXIV in his first year as head coach.
Bobby Bowden's first season as head coach of Florida State was 1976.
Dicky Nutt is Arkansas State's men's head basketball coach: Dickey Nutt is nearing the end of his 13-year run as head coach. This is more than likely his last year. He is now entering his first season as the head mens coach of southeastern Missouri university.
Sean Payton is currently in his fourth year as head coach of the Saints.