Mel Ott debuted with the New York Giants in 1926, just eight weeks after turning 17. That season, he played 35 games and impressed with a .383 batting average and a .393 on-base percentage. In 1927, the Giants gave Ott more chances. He appeared in 82 games and hit a solid .282.
Ott’s breakout came in 1928, his age-19 season. He played 124 games and slashed .322/.397/.524, showing star-level production. By the end of that year, Ott had played 241 games as a teenager, setting a new major league record. That mark stood for nearly 50 years.
In 1973, the Milwaukee Brewers drafted Robin Yount out of Taft High School in Woodland Hills, California. Less than a year later, he made the big-league roster.
In 1974, Yount appeared in 107 games, earning more trust from the team. By 1975, he took over as Milwaukee’s everyday shortstop. As his 20th birthday neared, Yount continued piling up games. By the time Yount left his teenage years, he had played in 243 games—two more than Ott.
In a testament to the difficult of playing at baseball’s highest level as a teen, Yount’s record has lasted even longer than Ott’s.
Shown above is a lineup card signed by Yount. The September 26, 1991 contest shows Robin in the cleanup spot of manager Tom Trebelhorn’s lineup.
The game was historic because Yount passed another inner-circle Cooperstown man on an all-time list. Robin’s 4th inning single gave him 2,874 career hits, one more than the great Babe Ruth.
Yount signed the card and added the inscription, “PASSED BABE RUTH ON HITS LIST”.
Lineup cards from historic games like this are usually found either in the player’s possession or at the Hall of Fame.