How do you guarantee a lengthy career? You marry the boss's niece like Joe Haynes did. He became Clark Griffith's nephew-in-law in 1941, so even as his fastball disappeared, he remained in the league, rejuvenating his career with the White Sox. He lead the AL in ERA in 1947, before winding down about the time this photo was taken.
If you want to trade some beaters, let me know!
Take Care,
Geno