Gary Radnich was born Gary Radunich in San Jose, where he starred in basketball at Del Mar and Branham High Schools. He would play NCAA Division 1 basketball at Brigham Young University and the University of Nevada, Las Vegas.
Before becoming a fixture on KNBR, Radnich was a sports anchor on television stations in Las Vegas, Fresno, Sacramento, and Columbus, OH.
He had been the sports director at KRON-TV in San Francisco for several years when he began to host a three-hour daily show on KNBR in addition to his television duties.
Radnich retired from KRON in 2018 and from KNBR in 2019.