Damar Hamlin collapsed during a Bills game in January 2023 after suffering cardiac arrest, later confirmed as commotio cordis, a rare chest-impact event that disrupts the heart’s rhythm. He recovered, was cleared to return, and has since continued his NFL career.

What happened

  • On January 2, 2023, Hamlin was tackled in a game against the Bengals and went into cardiac arrest on the field.
  • He received CPR, was hospitalized in critical condition, and then improved over the following days.
  • Hamlin later said the cause was commotio cordis, which happens when a blow to the chest hits at exactly the wrong moment in the heartbeat.

What happened after

  • He was discharged from the hospital on January 11, 2023.
  • He returned to playing football later that year.
  • More recent coverage says he has continued with the Bills, though a 2026 report noted an injury-related absence and that he remained on injured reserve at that time.

In plain terms

It was a sudden medical emergency on the field, not a long-term public mystery. The important part is that Hamlin survived, recovered, and made it back to football.

TL;DR: Damar Hamlin had a cardiac arrest on the field in 2023 from commotio cordis, recovered after emergency treatment, and returned to the NFL.