Centuries By Ian Graham In Season 1988-1989
| Tournament | Total | Breaks - Venue | Breaks - Qualifying | Rate |
|---|---|---|---|---|
 1989 World Championship |
1 | 115 | 53 | |
| 1989 British Open |
1 | 110 | 22 | |
| 1989 English Professional Championship |
1 | 117 | 35 | |
| 1988 International Open |
1 | 122 | 7 |