If Valencia can manage a positive result against Barcelona, the possibility that the tie will go to penalties is highly likely, but what would happen?Looking at how both teams would fair going into a shoot-out, Valencia would enter the scenario with an abundance of confidence as keeper Jaume, has already saved penalties this season.The Catalans, on the other hand, have not had to endure a penalty shoot-out in the Copa del Rey since the final against Mallorca in 1998, which was played, ironially, at the Estadio Mestalla.On that occasion, the hero was Ruud Hesp, who stopped Eskurza’s shot to win Barcelona the title.On Thursday night, Hesp’s fellow countryman Jasper Cillessen, will be in charge of defending the Blaugrana goal.It can’t be said that the former Ajax man is a specialist in the field. Over the course of his career, Cillessen has had 31 penalties taken against him, of which 28 ended in a goal. Of the other three, one was saved, one hit the post and another was off target. Cillessen will also be remembered for being substituted by Dutch coach, Louis Van Gaal, just before the end of extra-time in the quarterfinals of the World Cup in 2014.The tie was about to go to penalties and he preferred to have Tim Krul facing Costa Rica’s spot-kicks. In terms of penalty takers, Messi usually takes them during games although confidence in the Argentinian to convert is not at 100 percent.Messi has only scored half of the six penalties he has taken this season, and 83 out of 107 overall.Other worthy candidates to step- up are: Luis Suarez, Rakitic, Alcacer, Iniesta, Coutinho, Paulinho, Sergi Roberto, Aleix Vidal and Jordi Alba.