53 to be exact, which has to be a record in any sport, including NCAA. AND!!!!! 9 starting quarterbacks in 53 years!! They didn't always finish the season, due to injury performance, etc.. 12 others were involved as well I believe.
For the record the Bills have had 17 starters with 30 others involved in the same 53 years.
Can't stand the Steelers, but they seem to be in or around the playoffs every year.