[Editor’s note: This article has been updated to correct the location of the Hall of Fame as Canton, Ohio.]
The 24-year-old safety went into cardiac arrest after making a tackle during Monday night’s game against the Cincinnati Bengals, and collapsed on the field.
Hamlin was resuscitated twice, his uncle told CNN. His family said Tuesday evening he remained in critical condition, reported FOX 8 sister station WDTN.
The exact cause of Hamlin’s cardiac arrest has not been released.
A Cleveland Clinic doctor told FOX 8 that the hit may have caused a rare and often fatal heart dysfunction known as commotio cordis, caused by an impact to the chest at a specific point in the heart’s rhythm.