Cox was the 49ers’ rookie backup strong safety for the 1988 team. He’d gone to San Jose State, then left the Niners via Plan B free agency after 1988 for the Giants. Cox said this about being left off the 49ers’ protected list: “I didn’t know they made me a free agent until I found out in a newspaper. I thought it was good. How often can you get a chance to play where you want? Look, it’s a business. You have to have a thick skin.” He came back to the Niners for the 1990 and 1991 seasons, his last two in the NFL.
In the spring of 1995 he came back to professional football, the Arena Football League, playing for the San Jose Sabercats, with Darryl Pollard as a teammate, Todd Shell as his coach, Roger Craig helping broadcast the games for KICU-TV, and Keena Turner teaming with Bob Fitzgerald for the radio call on KNBR. I don’t know how long Cox was in the AFL. He said this about coming back to football: “I missed the game. I got the urge to hit somebody. I wanted to get back in football. My little boy is 3. He’s never seen me play. I want him to see his daddy play.”