William J. Mullan - Football referee
| WC 1978 qualifiers - Europe | ||||
| Iceland | Netherlands | 1976-09-08 | 0 - 1 | |
| European Cup 1972 - 1973 | ||||
| 1st round (replay) | Panathinaikos | CSKA Sofia | 1972-10-26 | 0 - 2 |
| WC 1974 qualifiers - Europe | ||||
| Wales | England | 1972-11-15 | 0 - 1 | |
| Norway | Belgium | 1972-10-04 | 0 - 2 | |
| UEFA Cup 1971 - 1972 | ||||
| 1st round | Club Brugge | Ã…tvidaberg FF | 1972-09-27 | 1 - 2 |
| Olympic Games 1972 | ||||
| 2nd stage | Germany DR OT | Germany FR OT | 1972-09-08 | 3 - 2 |
| 1st stage | Hungary OT | Brazil OT | 1972-08-29 | 2 - 2 |
| Euro 1972 | ||||
| 1/2 finals | Belgium | Germany FR | 1972-06-14 | 1 - 2 |
| Intercontinetal Cup | ||||
| 2nd leg | Nacional (UR) | Panathinaikos | 1971-12-28 | 2 - 1 |
| European Cup2 1971 - 1972 | ||||
| 1st round | Sparta Rotterdam | Levski Sofia | 1971-09-29 | 2 - 0 |
| Euro 1972 qualifiers | ||||
| Germany FR | Poland | 1971-11-17 | 0 - 0 | |
| Netherlands | Yugolsavia | 1970-10-11 | 1 - 1 | |
| European Cup2 1970 - 1971 | ||||
| 1st round | AaB | Gornik Zabrze | 1970-09-16 | 0 - 1 |
| European Cup 1969 - 1970 | ||||
| 2nd round | Spartak Trnava | Galatasaray | 1969-11-12 | 1 - 0 |
| 1st round | Ferencváros | CSKA Sofia | 1969-10-01 | 4 - 1 |
| British Championship | ||||
| Northern Ireland | England | 1969-05-03 | 1 - 3 | |
| European Cup 1968 - 1969 | ||||
| 1st round | Waterford | Manchester United | 1968-09-18 | 1 - 3 |
| friendly | ||||
| Ireland | Germany FR | 1966-05-04 | 0 - 4 | |
| Fairs Cup 1965 - 1966 | ||||
| 2nd round | Sporting | Espanyol | 1965-11-10 | 2 - 1 |
| European Cup2 1965 - 1966 | ||||
| 1st round | KR | Rosenborg | 1965-08-24 | 1 - 3 |
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