Steelers QB Russell Wilson limited due to calf tightness

(Photo credit: Junfu Han / USA TODAY NETWORK)
Justin Fields operated the Pittsburgh Steelers' offense for most of Thursday's practice with starter Russell Wilson limited because of calf tightness, the same injury that kept him out of several days of training camp.

Head coach Mike Tomlin said there are no long-term concerns about Wilson's health. Pittsburgh opens the regular season Sunday at Atlanta.

"We wanted to exerci