2004 års World Series of Poker (WSOP) pokerturnering hölls vid Binion's Horseshoe efter att Harrah's Entertainment köpt kasinot och rättigheterna till turneringen i januari. Harrah's informerade senare om att kommande WSOP-tävlingar kommer att turnera runt om bland de olika kasinona, tillika medlemmar i Harrah's Entertainment.
Inledande event
| Event | Vinnare | Pris (USD) | Tvåa |
| $500 Casino Employee's Limit Hold'em | Carl Nessel | $40 000 | Cory Pocket |
| $2 000 No Limit Hold'em | James Vogl | $400 000 | Shawn Rice |
| $1 500 Seven Card Stud | Ted Forrest | $111 440 | Chad Brown |
| $1 500 Limit Hold-em | Aaron Katz | $234 940 | Richard Gardner-Brown |
| $1 500 Omaha Hi-Lo Split | Curtis Bibb | $160 000 | Paul Phillips |
| $1 500 Pot Limit Hold'Em | Minh Nguyen | $155 420 | Lorne Persons |
| $1 000 No-Limit Hold'Em | Gerry Drehobl | $365 900 | John Juanda |
| $2 000 Pot Limit Omaha | Chau Giang | $187 920 | Robert Williamson III |
| $1 500 No Limit Hold 'Em | Scott Fischman | $300 000 | Joe Awada |
| $2 000 Seven Card Stud Hi-Lo Split | Cyndy Violette | $135 900 | Pete Kaufman |
| $2 500 Limit Hold'Em | Eli Balas | $174 440 | Steve Shkolnik |
| $2 000 H.O.R.S.E. | Scott Fischman | $100 200 | John Cover |
| $5 000 No Limit Hold'Em | Thomas Keller | $382 020 | Martin De Knijff |
| $1 500 Seven Card Stud Hi-Lo Split | Hasan Habib | $93 060 | Tommy Polk |
| $2 000 Limit Hold' Em | Daniel Negreanu | $169 100 | Chris Hinchcliffe |
| $5 000 No-Limit Deuce to Seven Draw | Barry Greenstein | $296 200 | Chris Ferguson |
| $1 500 Limit Hold 'Em Shootout | Kathy Liebert | $110 180 | Kevin Song |
| $1 500 No-Limit Hold 'Em Shootout | Phi Nguyen | $180 000 | Kirill Gerasimov |
| $2 000 Omaha Hi-Lo Split | Annie Duke | $137 860 | Ron Graham |
| $1 000 Ladies Limit Hold 'Em | Crystal Doan | $58 530 | Millie Shiu |
| $2 000 Pot Limit Hold 'Em | Antonio Esfandiari | $58 530 | Phi Nguyen |
| $5 000 Omaha Hi-Lo Split | Brett Jungblut | $187 720 | John Cernuto |
| $1 500 No Limit Hold'em | Ted Forrest | $300 300 | Susan Pritchett |
| $5 000 Seven Card Stud | Joe Awada | $221 000 | Marcel Lüske |
| $3 000 Pot Limit Hold'Em | Gavin Griffin | $270 420 | Garry Bush |
| $1 500 Seven Card Razz | T. J. Cloutier | $90 500 | Russ Boyd |
| $1 000 Deuce to Seven Triple Draw | Farzad Bonyadi | $86 980 | Trung Ly |
| $1 000 Seniors No-Limit Hold'em | Gary Gibbs | $136 960 | Carl McKelvey |
| $5 000 Limit Hold 'Em | John Hennigan | $325 360 | An Tran |
| $3 000 No-Limit Hold'em | Mike Sica | $503 160 | John Kabbaj |
| $5 000 Pot Limit Omaha | Ted Lawson | $500 000 | Lee Watkinson |
| $1 500 A-5 Draw Lowball | Norm Ketchum | $84 500 | Barry Greenstein |
| Media Charity Event | Michael Kaplan | $10 000 (välgörenhet) |
Main Event
2 576 stycken deltog i Main Event. Varje deltagare betalade $10 000 för att delta i vad som då var den största pokerturneringen någonsin. Många deltagare, inklusive annat vinnaren, hade kvalat in via nätpoker.
Finalbordet
| Placering | Namn | Pris |
| 1 | Greg Raymer | $5 000 000 |
| 2 | David Williams | $3 500 000 |
| 3 | Josh Arieh | $2 500 000 |
| 4 | Dan Harrington | $1 500 000 |
| 5 | Glenn Hughes | $1 100 000 |
| 6 | Al Krux | $800 000 |
| 7 | Matt Dean | $675 000 |
| 8 | Mattias Andersson | $575 000 |
| 9 | Michael McClain | $470 400 |
| Större pokerturneringar |
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| World Series
of Poker | | efter år | | | | Europa | 2007 · 2008 · 2009 · 2010 | | | Övriga | Circuit events · Tournament of Champions |
| | | Pokerturneringar | | World | Säsong 1 · 2 · 3 · 4 · 5 · 6 · 7 · 8 · 9 | | | European | Säsong 1 · 2 · 3 · 4 · 5 · 6 · 7 | | | North American | Säsong 1 | | | Asia Pacific | Säsong 1 · 2 · 3 · 4 | | | Latin American | Säsong 1 · 2 · 3 |
| | | Super Bowl of Poker | 1979 · 1980 · 1981 · 1982 · 1983 · 1984 · 1985 · 1986 · 1987 · 1988 · 1989 · 1990 · 1991 | | | Late Night Poker | Säsong 1 · 2 · 3 · 4 · 5 · 6 | | | Poker Superstars | Säsong 1 · 2 · 3 | | | Ultimate Poker Challenge | Säsong 1 · 2 · 3 | | | Andra evenemang | Professional Poker Tour · Poker Million · U.S. Poker Championship · World Heads-Up · National Heads-Up · Poker Nations Cup · Irish Open · Asian Poker Tour · Partouche Poker Tour · Aussie Millions · Grand Prix |
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