Dani Parejo scored twice, one from the penalty spot, and Javi Fuego Martinez added a third as Valencia moved up to fourth in La Liga with a 3-1 victory over Sevilla.
Bacca scored from the penalty spot for Sevilla who are now in fifth place, two points behind Valencia.
A late strike by Javi Guerra earned Málaga a 1-1 draw with Athletic Bilbao, the Blue and Whites seemingly determined to avoid the hassle of European competition next season.