Greg Knapp has passed away at the age of 58 following a biking accident last Saturday in California. Knapp was hit by a single motorist at about 2:49 p.m., not far from his home in Danville, San Ramon police said.

The New York Jets hired Knapp this offseason as their passing-game specialist. 

Knapp began his NFL coaching career in 1997 as a low-level offensive assistant for the San Francisco 49ers. He forged a tight bond with Young, and the two remained close. Knapp also coached for the Atlanta Falcons (two stints), Oakland Raiders (two stints), Seattle Seahawks, Houston Texans and Denver Broncos, either as the quarterbacks coach or the offensive coordinator.