Jeff Guilfoyle
Last tournaments played
| Tournament | Date | Elo Avg. | Country |
| Lansing op | 09/03/2004 | 1481 |  United States |
| Kalamazoo op | 10/25/2003 | 1248 | United States |
Most Played Openings as White
| ECO | Opening | Games |
| E91 | King's Indian, 6.Be2 | 1 games |
| E93 | King's Indian, Petrosian system, main line | 1 games |
| D14 | Queen's Gambit Declined Slav, exchange variation, 6.Bf4 Bf5 | 1 games |
| E71 | King's Indian, Makagonov system (5.h3) | 1 games |
Most Played Openings as Black
| ECO | Opening | Games |
| B12 | Caro-Kann defence | 2 games |
| D58 | Queen's Gambit Declined, Tartakower (Makagonov-Bondarevsky) system | 1 games |
| B10 | Caro-Kann defence | 1 games |
| E61 | King's Indian defence, 3.Nc3 | 1 games |
