Centuries By John Spencer In Season 1986-1987
| Tournament | Total | Breaks - Venue | Breaks - Qualifying | Rate |
|---|---|---|---|---|
 1987 World Championship |
1 | 110 | 41 | |
| 1987 British Open |
2 | 100 | 129 | 18 |
| 1986 International Open |
2 | 134, 104 | 7 |
| Tournament | Total | Breaks - Venue | Breaks - Qualifying | Rate |
|---|---|---|---|---|
| 1987 World Championship |
1 | 110 | 41 | |
| 1987 British Open |
2 | 100 | 129 | 18 |
| 1986 International Open |
2 | 134, 104 | 7 |