The Pittsburgh Steelers purport to believe that they have three starter-capable quarterbacks on their 53-man roster right now in Mitch Trubisky, Kenny Pickett, and Mason Rudolph, with that order expected to be the depth chart once we get into the regular season in a very short amount of time.
The team signed Trubisky as a veteran free agent in March before they knew that they would have the opportunity to draft Pickett, who proceeded to impress during preseason play, and has many people, both inside and outside of Pittsburgh, clamoring for him to start.
Even though head coach Mike Tomlin has (arguably) strategically opted thus far not to publicly announce who the starting quarterback would be, it has been one of the worst-kept secrets in sports right now that Trubisky is all but officially the starter.