My hunch is you were probably able to get the first two, but the first head coach to win playoff games with five different quarterbacks is a little tougher to guess.
Chuck Knox won playoff games with the Rams with Harris in 1974, Ron Jaworski in 1975, and then Pat Haden in 1976. Knox actually went to the playoffs with four different quarterbacks in four years with the Rams, as he was the head coach for the John Hadl-led, 12-2 Rams, in 1973.
Knox then went to Buffalo, and made it to the playoffs in ’80 and ’81 with Joe Ferguson at quarterback, winning during his second try with the Bills. After that, Knox moved to Seattle, and won three playoff games with Dave Krieg in ’83 and ’84.
How did you do? Leave your thoughts in the comments.