S.F. Giants great Willie Mays celebrates his 90th birthday today. The Major League Baseball Hall of Famer is a San Francisco icon and an ambassador for the sport who was still a regular at Giants games pre-pandemic. San Francisco Chronicle national baseball writer and sports columnist John Shea, who co-authored the book "24: Life Stories and Lessons from the Say Hey Kid" with Mays, talks about the baseball legend's 90th birthday, his rough start in San Francisco and what he means to the city today. | Unlimited Chronicle access: sfchronicle.com/pod

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