Sandy Koufax
Born December 30, 1935 · 90 years old
four no-hitters, a perfect game, retiring at his peak
He retired in 1966 at the absolute peak, which froze him in amber as 'the legend who walked away.' Walking away from baseball was not walking away from anything else.
90, still shows up at Dodgers camp every spring to teach pitching.
Confirmed alive as of September 23, 2026 · source: Wikidata