Under Unai Emery, Villarreal have only lost one of their 12 European games away from home.
The defeat came against Manchester United last September. Cristiano Ronaldo scored a 95th minute winner in a 2-1 victory for United in the Champions League group stages.
Emery is undefeated in his other 11 matches, both in the Europa League, where he has a phenomenal record and in the Champions League.
In the Europa League, he has five wins and two draws. In the Champions League, Emery has three wins, one draw, and the loss to United at Old Trafford.
Villarreal face Liverpool in their Champions League semi-final first leg at Anfield tomorrow and Emery will be hoping to extend his impressive away record in Europe.