The 58-year-old New York Jets assistant coach was fighting for his life at a local hospital after he was struck by a car while riding his bike Saturday afternoon.
He died at the hospital.
San Ramon Police Lt. Tami Williams said Knapp, who lived in Danville, was riding down Doughtery Road just north of North Monarch Road when he was hit by a car traveling in the same direction.
Lt. Williams says the driver, a 22-year-old man, remained on the scene and cooperated with investigators. At this point, authorities say drugs and alcohol do not appear to be a factor.
Knapp was listed in critical condition at John Muir Medical Center in Walnut Creek.
Prior to being hired by the Jets, he served as offensive coordinator for several NFL teams including the San Francisco 49ers, then the Oakland Raiders.
In a statement released by his family through the Jets, they say:
“While so many know him for his achievements as a coach, his impact as a father and husband are far greater. We are so fortunate to have him in our lives. We are sincerely thankful to all those who have continued to reach out and provide support… It has meant the world to us.”
Knapp is survived by his wife, Charlotte, and three daughters.