| Name | Siem Wellinga |
| Born on | |
| Nationality | Netherlands |
| Role | Referees |
| Date | Competition | Round | Match | Sum. Video | Full Video | Match Report |
|---|---|---|---|---|---|---|
| 5/5/1978 | Dutch Cup | Final | Ajax - AZ '67 0 - 1 (0 - 0) | |||
| 4/2/1978 | Eredivisie | 30 | Ajax - NEC 6 - 1 (3 - 1) | |||
| 11/20/1977 | Dutch Cup | 2 | Ajax - Telstar 4 - 1 (2 - 1) | |||
| 9/4/1977 | Eredivisie | 6 | Ajax - Feyenoord 2 - 2 (0 - 0) | |||
| 8/5/1977 | Amsterdam 7x | Semi Final | Ajax - Liverpool 2 - 1 (1 - 0) | |||
| 2/13/1977 | Eredivisie | 23 | Sparta Rotterdam - Ajax 0 - 3 (0 - 1) | |||
| 1/29/1977 | Eredivisie | 21 | PSV - Ajax 3 - 1 (1 - 0) | |||
| 9/25/1976 | Eredivisie | 8 | NAC - Ajax 0 - 1 (0 - 1) | |||
| 8/25/1976 | Eredivisie | 2 | AZ '67 - Ajax 0 - 3 (0 - 3) | |||
| 3/21/1976 | Eredivisie | 20 | Roda JC - Ajax 0 - 0 (0 - 0) | |||
| 8/24/1975 | Eredivisie | 2 | Ajax - Excelsior 2 - 0 (0 - 0) | |||
| 9/14/1974 | Eredivisie | 3 | Ajax - Wageningen 3 - 1 (2 - 1) | |||
| 4/7/1974 | Eredivisie | 29 | Ajax - MVV 4 - 1 (1 - 0) | |||
| 11/25/1972 | Eredivisie | 14 | Ajax - Excelsior 8 - 0 (5 - 0) |