William Ollila has faced 10 opponents throughout his career
| Player | Team(s) | Games |
|---|---|---|
| Veeti Amegbedzi |
Jyvaskylan Weikot
(FIN-2)
|
1 |
| Anton Budanov |
Jyvaskylan Weikot
(FIN-2)
|
1 |
| Jarno Lehto |
Jyvaskylan Weikot
(FIN-2)
|
1 |
| Patrik Poutiainen |
Jyvaskylan Weikot
(FIN-2)
|
1 |
| Karo Puittinen |
Jyvaskylan Weikot
(FIN-2)
|
1 |
| Sami Salmenkivi |
Jyvaskylan Weikot
(FIN-2)
|
1 |
| Oskari Savolainen |
Jyvaskylan Weikot
(FIN-2)
|
1 |
| Henri Valimaa |
Jyvaskylan Weikot
(FIN-2)
|
1 |
| Iisak Vataja |
Jyvaskylan Weikot
(FIN-2)
|
1 |
| Ville Virtaharju |
Jyvaskylan Weikot
(FIN-2)
|
1 |