Centuries By John Spencer In Season 1976-1977
| Tournament | Total | Breaks - Venue | Breaks - Qualifying | Rate |
|---|---|---|---|---|
 1977 World Championship |
2 | 135, 105 | 60.5 | |
| 1976 Canadian Open |
2 | 114, 100 | 30 |
| Tournament | Total | Breaks - Venue | Breaks - Qualifying | Rate |
|---|---|---|---|---|
| 1977 World Championship |
2 | 135, 105 | 60.5 | |
| 1976 Canadian Open |
2 | 114, 100 | 30 |