By Matt Hladik For the first time in nearly two decades, the Pittsburgh Steelers will have a new starting quarterback when the 2022 season begins. Ben Roethlisberger is officially retired, and the Steelers are set to have Mason Rudolph and free agent signing Mitchell Trubisky compete to be his replacement. Dwayne Haskins is also on the roster, but appears headed for another season as the third-string signal caller. When the offseason began, many though Pittsburgh would be in the market for a veteran quarterback via trade, but they ultimately decided to go the free agent route with Trubisky. No…