Who was the youngest ever professional boxer?

Answer 1

Many claim that it's Baby Arizmendi at the age of just 10

The Ring magazine said that Baby Arizmendi was perhaps the youngest person ever to have become a professional boxer; he turned pro at the ripe old age of 13, although some swore he was only seven when he had his first pro fight. Others have him listed as 10.

I don't think anyone knows for sure but here's another list that I have:

Len Harvey 12 years 175 days, Pro Debut January 2, 1920

Teddy Baldock 12 years 298 days. Pro debut March 14, 1921

Baby Arizmendi 13 years 208 days, Pro debut March 17, 1914

Rodolfo Gonzalez 13 years 336 days, Pro debut November 17, 1959

Alfredo Peña was born in Mexico from legendary boxer Luis Ignacio Peña, El Rey de Mexico. Debuting at the Plaza de Toros in Tijuana against Dolores Osorio.

Also, Al Diamond out of Paterson New Jersey was just 13 when he started in 1927.

Manuel Medina, who fought and defeated Scott Harrison and was then beaten in the return a year or 2 ago, he was 14 years old when he began boxing as a pro.

Here's yet another list:

Youngest pro debut by a fighter:

1. Baby Arizmendi age 10

2. Alfredo Peña age 12

2. Teddy Baldock age 14

3. Al McCoy age 14

4. Battling Nelson age 14

5. Georges Carpentier age 14

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check out Nipper Pat Daly on boxrec.com - he was 8 or 9 years old in his first pro fight. he had a record of 100 wins - 11 losses and 8 draws.

Answer 2

Freddy Adu made his first professional appearance for DC United of Major League Soccer in 2004. He was 14 years old at the time.