Gentle giant Mickey Tettleton was a part-time player and backup catcher until age 28, when he slugged his way to stardom, becoming the best catcher of the early 90s (per bWAR) and citing a daily diet of Froot Loops as the catalyst for his out-of-nowhere power surge.
Stats and screen captures from Baseball Reference/Stathead https://stathead.com/baseball
Video footage used:
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Sources used:
Baltimore Sun https://www.baltimoresun.com/news/bs-xpm-2009-08-12-0908120002-story.html
Baseball Almanac https://www.baseball-almanac.com/players/player.php?p=tettlmi01
Baseball Prospectus https://www.baseballprospectus.com/news/article/20191/wezen-ball-the-froot-loop-summer/
The Baseball Scholar https://thebaseballscholar.com/2019/04/03/100-greatest-catchers-of-all-time/
Fangraphs https://blogs.fangraphs.com/a-conversation-with-80s-90s-slugger-mickey-tettleton/
Los Angeles Times https://www.latimes.com/archives/la-xpm-1991-06-27-sp-1816-story.html
https://www.latimes.com/archives/la-xpm-1990-03-25-sp-433-story.html
https://www.latimes.com/archives/la-xpm-1989-08-20-sp-1201-story.html
https://www.latimes.com/archives/la-xpm-1989-06-14-sp-2103-story.html
SB Nation https://www.sbnation.com/mlb/2018/4/30/17277860/1988-baltimore-orioles-losing-streak-21-games-record-zoinks
Sportscasting https://www.sportscasting.com/whatever-happened-to-fan-favorite-mickey-tettleton-and-his-love-of-froot-loops/
Washington Post https://www.washingtonpost.com/archive/sports/1990/05/23/tettletons-upturn-just-turned-up/847f7ee1-ba0f-4744-99dc-7d36d461ac1f/
https://www.washingtonpost.com/archive/sports/1993/06/24/two-catchers-on-a-homer-run/c3a40c2d-c0f3-41f4-a0b1-17cf25e56f81/