New York (AFP) – Buffalo Bills safety Damar Hamlin, who suffered a cardiac arrest during an NFL game, was improving Wednesday but still in critical condition as other players began preparing for weekend contests. The 24-year-old defensive back collapsed Monday night after receiving a hard hit in the chest while tackling Cincinnati receiver Tee Higgins during the first quarter. Medical workers restored Hamlin’s heartbeat on the field and he was taken from the stadium to a hospital by ambulance, while the game was halted with the host Bengals leading 7-3. “Damar remains in the ICU (intensive car…