With three Spanish teams remaining in a league dominated by LaLiga clubs in previous years, Barcelona and tournament experts Sevilla are trying to earn positions in the Europa League quarterfinals this week.
Barca travel to Istanbul for the second leg of their Europa League last-16 tie against Galatasaray on the back of a 10-game unbeaten run that has carried them back to third place in LaLiga and seen them emerge as one of the favorites to win the competition.
"When the fans come to the stadium, they have a good time, and we have a good time out on the pitch," said Gerard Pique, who played his 600th game for Barcelona in Sunday's 4-0 win over Osasuna.
"The results are flowing in, and we hope to keep this up until the conclusion of the season," the veteran centre-back said on the club's website.
However, Xavi Hernandez's side were held 0-0 at home in the first leg of their Europa League encounter last week by a struggling Galatasaray, and they still have work to do to reach the quarterfinals.
Meanwhile, Sevilla travels to London to face West Ham United, with a 1-0 lead thanks to Munir El Haddadi's strike in the first leg.
Six draws in their previous eight league games have virtually ruined Julen Lopetegui's side's title chances, leaving them 10 points behind leaders Real Madrid.
They are, however, on course for additional success in the Europa League, where they are aiming to capture a trophy they have won a record six times since 2006.
Sevilla also has the added motivation of competing in a final on May 18 at their home stadium, the Ramon Sanchez Pizjuan.
They left Marcos Acuna out of their squad for the trip to England, where they will play a West Ham side that sees the Europa League as their best opportunity of winning a major trophy in almost four decades.
"We need to score, and I hope we can demonstrate our quality and take advantage of the opportunity on Thursday in front of a full stadium," said Hammers midfielder Tomas Soucek.
