His mother is a psychiatrist and his father is an English professor who introduced Isaac to games of skill at an early age.

[6] After high school Haxton attended Brown University as a computer science major, but later spent more time playing poker than studying.

[12] The next week, Haxton won the 2023 PokerStars Caribbean Adventure $100,000 PCA Super High Roller for $1,082,230.

[14] In June 2023, Haxton won his first bracelet at the 2023 World Series of Poker $25,000 High Roller No-Limit Hold'em 8-Handed event for $1,698,215 .

[15] In September of that year, Haxton won The Super High Roller Bowl, defeating Andrew Lichtenberger heads up and earning over $2.7 million.