Centuries By Mark Johnston-Allen In Season 1990-1991
| Tournament | Total | Breaks - Venue | Breaks - Qualifying | Rate |
|---|---|---|---|---|
 1991 European Open |
1 | 114 | 63 | |
| 1991 World Masters - Mens Singles |
1 | 113 | 16 |
| Tournament | Total | Breaks - Venue | Breaks - Qualifying | Rate |
|---|---|---|---|---|
| 1991 European Open |
1 | 114 | 63 | |
| 1991 World Masters - Mens Singles |
1 | 113 | 16 |