While completing a tackle in the first quarter, Hamlin appeared to take a hit to the head and chest from Bengals' wide receiver Tee Higgins.Hamlin's condition was listed as critical for several days after his initial hospitalization in Cincinnati, the news of which quickly ushered in an outpouring of public support from the NFL player's teammates, fellow athletes and fans.When Hamlin was released from the University of Cincinnati Medical Center and transferred to Buffalo, a statement attributed to the hospital and tweeted by the Bills confirmed that he was "doing well," calling the athlete's transfer "the next stage of his recovery."One day after his collapse, CBS News medical contributor Dr. David Agus explained that blunt force trauma to the chest area "in the exact right spot, at the exact right moment during his heartbeat" could have caused an arrhythmia, which is an irregular heart rhythm that disrupts blood flow to the brain.Hamlin joined the Bills during the 2021 NFL Draft, following a successful college football career at the University of Pittsburgh, and played 14 games during his rookie season in a reserve role."