Centuries By John Spencer In Season 1974-1975
| Tournament | Total | Breaks - Venue | Breaks - Qualifying | Rate |
|---|---|---|---|---|
 1975 Ireland Tournament |
2 | 121, 109 | 8.5 | |
| 1975 Pontins Professional |
1 | 117 | 37 | |
| 1975 World Championship |
2 | 114, 103 | 30.5 |
| Tournament | Total | Breaks - Venue | Breaks - Qualifying | Rate |
|---|---|---|---|---|
| 1975 Ireland Tournament |
2 | 121, 109 | 8.5 | |
| 1975 Pontins Professional |
1 | 117 | 37 | |
| 1975 World Championship |
2 | 114, 103 | 30.5 |