Layne Flack, a six-time World Series of Poker bracelet winner, was found dead in his sleep in his Las Vegas home on Monday. He was 52 years old.

Flack first burst onto the poker scene in the late 1990s. His first live tournament win came at the Hall of Fame Poker Classic at Binions in 1997. He earned $67,500 for the win but solidified his poker legend over the coming years by shining on poker’s biggest stage, the WSOP.

He won his first WSOP bracelet in 1999 when he took down a $3,000 Pot Limit Hold’em event for $224,400. In 2002, Flack won two bracelets, first in a $2,000 No Limit Hold’em and then a $1,500 No Limit Hold’em. He repeated that feat the next year, winning a $2,500 Omaha Hi-Lo Split title and then winning the $1,500 Limit Hold’em Shootout event.

His sixth bracelet came in 2008 when he won the $1,500 Pot Limit Omaha (with rebuys) for a career-best $577,725 score.

Flack was one of just 16 players with at least six WSOP bracelet wins.

Layne was dubbed ‘Back-to-Back Layne Flack’ after he won consecutive events at the 1999 Legends of Poker at the Bicycle Casino in Los Angeles. Winning two bracelets in 2002 and again in 2003 cemented that nickname.

Over the course of his career, Flack cashed 151 times and earned $5,081,152 according to The Hendon Mob.

Flack was born in Rapid City, South Dakota in 1969, but spent most of his childhood in Montana. In his early 20s, he managed a small card room in Billings, Montana. Flack moved to Las Vegas in 1997 to pursue a professional poker career.

Flack is survived by his 26-year-old daughter, Hailey. Plans for a service have yet to be announced.