1998 Irish Masters - Centuries
| Date | Player | Round | Break | |
|---|---|---|---|---|
 Ken Doherty |
Final | 129 | ||
| Ronnie O'Sullivan |
Semi-final | 123 | ||
| Mark Williams |
Quarter-final | 112 | ||
| Ken Doherty |
Quarter-final | 111 | ||
| Ronnie O'Sullivan |
Quarter-final | 109 | ||
| Ronnie O'Sullivan |
Final | 107 | ||
| Mark Williams |
Quarter-final | 101 |