Valencia won a five-goal thriller at the Mestalla Stadium, Valencia.
Valencia's three goals were scored by Javi Guerra, Erya Comert and Hugo Duro, while Alaves' two goals were scored by Lucas Boye.
Alaves had to finish the match with nine men after Jon Pacheco and Ander Guevara were shown red cards for two yellow cards.
This victory moved Valencia up to 12th place in the Spanish League standings with 32 points from 27 matches.
