The Pittsburgh Steelers won't settle on a starting quarterback until after their preseason finale, Mike Tomlin says.

Mitchell Trubisky has been considered the frontrunner since he was signed as a free agent, but rookie Kenny Pickett has made a late charge. Mason Rudolph has also played well, but has recently been moved to third-team work.

"A lot of spots are going to come down to this work," Mike Tomlin said of Pittsburgh's preseason finale. "This work is weighted differently, and appropriately so. The in-stadium work is significant, and increasingly so with the more stadium exposure you get. So make no mistake, this is a significant game for a lot of people."