Question juridique clé
Whether the cantonal court assessed the evidence arbitrarily, especially the parties' statements about the attack and the presence of a wheel wrench.
Solution extraite
No arbitrariness was shown; the Federal Court deferred to the cantonal findings.
Motifs extraits
The challenge was mainly appellatory. The cantonal court could credit X.'s account on the decisive points and reject Y.'s version under the narrow arbitrariness review applicable on appeal.