She holds a World Series of Poker (WSOP) gold bracelet from 2004 and used to be the leading money winner among women in WSOP history, and is still in the top five as of April 2023, despite being retired from poker, last cashing at a tournament 2010.
https://en.m.wikipedia.org/wiki/Annie_Duke
So yeah, top enough to use her professional experience as context for her books. Once you read the books you'd understand.
She holds a World Series of Poker (WSOP) gold bracelet from 2004 and used to be the leading money winner among women in WSOP history, and is still in the top five as of April 2023, despite being retired from poker, last cashing at a tournament 2010.
https://en.m.wikipedia.org/wiki/Annie_Duke
So yeah, top enough to use her professional experience as context for her books. Once you read the books you'd understand.