The diminutive Japanese eater devoured 69 dogs in 10 minutes, topping Joey "The Jaws" Chestnut's record of 68 franks he set in 2009.
However the record is not likely to be recognized as it was not sanctioned by the Major League Eating or the Guinness World Records.
Chestnut has won five straight titles in Coney Island, including the Nathan's event on Monday, but Kobayashi was once the top dog in the hot dog eating world, ruling over that event for six years.
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