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Chelsea matches where Dave Mackay was opposition manager/coach
| Date | Venue | Opponent | Score | Comp |
| 19/01/1974 | Stamford Bridge | Derby County | 1-1 | Football League Division 1 |
| 25/09/1974 | Baseball Ground | Derby County | 1-4 | Football League Division 1 |
| 08/03/1975 | Stamford Bridge | Derby County | 1-2 | Football League Division 1 |