In (i) the by-phrase contains Vitesse, the logical subject of won (cf. Vitesse won the match). As shown by (ii), by-phrases are also possible in nominal passives.
(i) The match was won by Vitesse.
(ii) Carthago's destruction by the Romans.
(iii) They kissed by the light of the moon.
- Baker, M., Johnson, K. & Roberts, I. 1989. Passive Arguments Raised. Linguistic Inquiry 20, 219-252.
- Grimshaw, J. 1990. Argument Structure. Cambridge, Mass: MIT-press.
- Jaeggli, O. 1986. Passive. Linguistic Inquiry 17, 587-622.