INDIANAPOLIS — With the Lucas Oil Stadium crowd silent and the Indianapolis Colts’ team medical personnel hard at work, Jack Doyle ’s mind drifted away from Indy for a moment.As he watched his fellow tight end, Brandon Williams , down on the turf, almost completely motionless after suffering a head injury on a punt play in the second quarter of Thursday’s game against the Denver Broncos, Doyle just knew Williams’ family would be among those tuned in to this primetime Thursday Night Football matchup.

Tough,” Doyle listed off when asked about his initial thoughts as he watched Williams be treated on the turf.

Just 10 days prior to Thursday’s game, Pittsburgh Steelers linebacker Ryan Shazier was rushed to a Cincinnati-area hospital and had to undergo spinal surgery after he lowered his head on a tackle attempt against the Cincinnati Bengals, so it would be hard not to assume a similar fate for Williams, who was reportedly diagnosed with congenital spinal stenosis — or a narrowed spine — during his college career at the University of Oregon and was forced to quit playing football for the time being.

Then, the team announced Williams, who was placed on the stretcher and hospitalized for precautionary reasons, was awake and alert, he had no neck pain and he had movement in his limbs.

Then the best news came after the game, when head coach Chuck Pagano announced Williams, who was diagnosed with a concussion, had been released from the hospital and was back at Lucas Oil Stadium under the care of team medical personnel.