PITTSBURGH (KDKA) - Since Monday night, when Bills' safety and McKees Rocks native Damar Hamlin suffered cardiac arrest in the Bills-Bengals game, the football world has rallied together to support and pray.Since then, Hamlin's GoFundMe charity which helps his mother's daycare center "Kelly & Nina's Daycare Center" has raised more than $8 million thanks to the generosity of football fans, teams, and players across the globe.RELATED: Damar Hamlin: Buffalo Bills safety showing 'remarkable improvement,' doctors sayHamlin collapsed on the field after making a tackle Monday night against the Cincinnati Bengals, he tackled Bengals wide receiver Tee Higgins, stood up, and fell to the ground.He was later placed on a stretcher and given oxygen as he was taken off in an ambulance to a Cincinnati hospitalSince then, doctors have said he's made remarkable improvement, has been taken off of a breathing tube and has spoken with family, friends, and teammates."This is truly a brotherhood, regardless, if you know the individual personally or just came in contact with him across the league."