Gale Sayers, Dwight Clark bring brutal toll of football closer to
49ers legend Dwight Clark dies after battle with ALS
49ers Legend Dwight Clark Has ALS, Suspects Football May Be a Cause
The NFL and ALS: Before Dwight Clark, three 49ers were victims
49ers legend Dwight Clark announces ALS diagnosis
49ers legend Dwight Clark announces ALS diagnosis
Dwight Clark Cause of Death: How Did The 49ers Legend Die?
49er great Dwight Clark — receiver who made The Catch — dies at 61
49ers legend Dwight Clark says he has ALS, suspects football a