Michael Matusow (born April 30, 1968 in Los Angeles, California) is an American professional poker player, residing in Henderson, Nevada. Matusow's nickname of "The Mouth" reflects his reputation for trash-talking at the poker table. He is also known for sometimes ruining hours or days of good play with a single spectacular misjudgment, (known as a "Mike Matusow Blow-up" or "Mike Matusow Meltdown").

Matusow began playing poker seriously in the early 1990s, first while working as a poker dealer, then as a professional player. His successes include being a three-time World Series of Poker bracelet winner, and the winner of the 2005 World Series of Poker Tournament of Champions.

Matusow's first experience of poker was playing video poker in the Maxim Casino at the age of 18, which he played regularly, to the extent that he suffered from repetitive strain injury in his shoulders and arms. He occasionally stole money from his mother's purse and at one point attended Gamblers Anonymous meetings. Matusow was taught Texas hold 'em in 1989 by a rounder named Steve Samaroff.

Daniel Negreanu (pronounced /nɨˈɡrɑːnoʊ/; born July 26, 1974) is a Canadian professional poker player of Romanian origin. He has won four World Series of Poker bracelets and two World Poker Tour Championship titles. He is currently ranked second in the all-time career earnings list and is the star of poker game show Million Dollar Challenge. He plays a big part in the Pokerstars.net Big Game.

Negreanu was born in Toronto, Ontario. In 1967, his parents, Annie and Constantin, emigrated from Communist Romania, hoping to start a new life in the United States. Instead, they ended up settling in Toronto, where Constantin worked as an electrician and sold confectionery. Daniel was born five years after his brother, and even at an early age was extremely ambitious. "From the age of four, I thought I’d be rich. I told my mom I’d build a house out of Popsicle sticks, and move to Cafornia (sic),” Daniel recalls in a 2009 interview.

Daniel Negreanu attended Pineway public middle school in North York, where the principal complained to his mother about Daniel's "poor manners or behavior" and threatened to expel him for "ignoring the school rules." While nursing dreams of a career as a professional snooker player, the now 15-year-old Daniel learned how to play poker. By 16, he was spending time in pool halls, hustling, sports betting, and playing cards. When he was several credits short of graduation Daniel dropped out of high school and began his life as a rounder playing at the local charity casinos, usually at Casino Country and Fundtime Games, and looking for illegal games around the city. While in Toronto, Daniel met and began dating Evelyn Ng, who would also become a well-known professional poker player. After building up his bankroll, he left for Las Vegas at the age of 22 to pursue his dream of becoming a professional poker player. However, "The Strip" got the better of him and he was forced to move back home to Toronto to rebuild his bankroll.

Phil Hellmuth (born July 16, 1964) is an American professional poker player. He is best known for holding a record 11 World Series of Poker bracelets, for winning the Main Event of the 1989 World Series of Poker (WSOP) and for his temperamental, "poker brat" personality. He is also a member of the WSOP's Poker Hall of Fame.

Phillip Jerome Hellmuth, Jr. was born in Madison, Wisconsin, and attended the University of Wisconsin–Madison for three years before dropping out to play poker full time. He now lives in Palo Alto, California with his wife Katherine Sanborn (a psychiatrist at Stanford University) and their two sons Philip III and Nicholas.

As of 2011, his total live tournament winnings exceed $13,000,000. He is ranked fourth on the All Time Money List, behind Erik Seidel, Daniel Negreanu, and Phil Ivey. As a poker player, Hellmuth is known for taking his seat in tournaments hours after they begin.

In 1989, the 24-year-old Hellmuth became the youngest player to win the Main Event of the WSOP by defeating the two-time defending champion Johnny Chan in heads up play; his record has since been broken twice, when Peter Eastgate won in 2008 and Joe Cada won in 2009. Hellmuth holds the records for most WSOP cashes (85) and most WSOP final tables (45), overtaking T. J. Cloutier.

Michael Richard Sexton (born September 22, 1947 in Shelby, Indiana) is an American professional poker player and commentator. He is a member of the Poker Hall of Fame.

Sexton was a gymnast and attended The Ohio State University where he earned a degree in public recreation after changing majors from business. He jokes that he majored in poker because he played very frequently in college. He also regularly played contract bridge and taught classes on it in North Carolina.

Sexton joined the U.S. Army as a paratrooper in the 82nd Airborne Division in 1970. The division, however, had just returned from Vietnam, so he never saw any action. While he was in the army, he taught ballroom dancing and one of his clients convinced him to try being a salesman, which he continued to do after his two-year enlistment was up. After a while, he realized that he could make more money playing poker than being a salesman, so he took up poker in 1977.

Although Sexton frequented tournaments, he was never able to make it to the World Series of Poker because he coached Little League baseball teams and the schedules overlapped. In 1985 he moved to Nevada to pursue poker full time. Sexton was a well known cohort of poker player Stu Ungar. Upon Ungar's death, Sexton was a pallbearer and speaker at his funeral.

Christopher Philip Ferguson (born on April 11, 1963) is an American professional poker player.

He has won five World Series of Poker events, including the 2000 WSOP Main Event, and the 2008 NBC National Heads-Up Poker Championship.

On September 20, 2011, the U.S. Justice Department filed a motion to amend a civil complaint, alleging that Ferguson and three other directors of the poker website Full Tilt Poker were running a Ponzi scheme that paid out $444 million of customer money to themselves and the firm's owners.

Ferguson was born in Los Angeles, California. Both Ferguson's parents have doctoral degrees in mathematics and his father, Thomas Ferguson, teaches game theory and theoretical probability at UCLA.

Ferguson attended UCLA where he earned a Ph.D. in computer science (focusing on virtual network algorithms) in 1999 after five years as an undergraduate and 13 years as a graduate student. His Ph.D. advisor was Leonard Kleinrock.

Ferguson began playing poker at the age 10. In college he honed his skill on IRC playing poker for play money in chat rooms. In 1994, he began playing in tournaments in California and in 1995, he entered his first World Series of Poker. Ferguson beat T. J. Cloutier at the main event of the 2000 WSOP to win the $1.5 million prize. In 2004, he entered the WSOP main event, earning $120,000 for his 26th place finish (out of 2,576 players). Also in 2004, Ferguson helped launch the online poker site Full Tilt Poker.