Damar Hamlin has distinguished himself with the Buffalo Bills as a mature, outgoing, well-liked member of the organization.
It is a reputation he built at the University of Pittsburgh, as a leader on his college team and a socially conscious member of the community.
On Monday night, Hamlin collapsed on the field following a tackle in the Bills' game against the Cincinnati Bengals and was taken by ambulance to a hospital, where he was in critical condition, leaving teammates in tears and fans stunned at Paycor Stadium and in family rooms in Buffalo and across the nation.