33 | CBS AFC Divisional Game coverage, January 17, 2016, Roethlisberger 4-0 in Divisional Round, Defeated Manning in 2005

2005, was the year the Steelers went on to win Super Bowl 40, the last Super Bowl to end with a 'zero'.  Manning was a Colt then.

Roethlisberger is currently 33-years old

Steelers established in '33

Keystone = 2+5+7+1+2+6+5+5 = 33 (Pennsylvania, Keystone State)