Knapp, 58, collided with a single motorist on Saturday and sustained major injuries, according to police. San Ramon is about 30 miles east of Oakland.
Authorities do not suspect drugs or alcohol to be a factor in the incident. The driver of the vehicle’s name has not been released; they are cooperating in the investigation.
“Greg is an amazing father and husband whose passion for life can be felt in all his interactions with people,” the Knapp family said in a statement. “While 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. We ask that you continue to pray for Greg and our family during this time.”
Knapp is from Seal Beach, California, and went to Sacramento State University, according to the Jets.
“Greg is such an amazing individual it is hard to imagine the challenge facing him and his family,” Jets head coach Robert Saleh, who hired Knapp to be the passing game specialist in January, said in a statement. “Greg’s fun nature, kind disposition, and wealth of knowledge has allowed him to make genuine connections with all of our coaches, players and staff since he has been here. I ask that you keep him in your prayers as we all pull for him to recover from this horrific accident.”
Before heading to the Jets, Knapp spent the last three seasons with the Atlanta Falcons as the quarterbacks coach. Knapp helped the Denver Broncos win the Super Bowl in 2015 season when he was the quarterbacks coach for four seasons. The coaching veteran also spent ten seasons as an offensive coordinator for the San Francisco 49ers, Atlanta Falcons, Seattle Seahawks and the then-Oakland Raiders.