Celta Vigo is very lucky that Barcelona did not play with a winning mission in the last match which allowed them to win that kept them away from the relegation zone. The defeat in the last game did not have a big impact on Barcelona even though their winning record was tarnished, Barcelona played only to meet the requirements as a sign that the season was over. An additional three points allowed Celta Vigo to stay in La Liga next season. Real Valladolid, Espanyol and Elche were relegated to Laliga Smartbank.
Barca finishes the season with a defeat, whereas Celta Vigo defeated the champions at the Municipal de Balados stadium. Although the hosts did not relent in their efforts, absorbing and maintaining closer tackles on the visitors, they couldn't afford to forfeit their chance of retaining a spot in La Liga. Celta de Vigo is staying out of the relegation zone, while the blaugrana have nothing to lose because they are already La Liga winners. Xavi Hernandez's focus is not centered around the game; alternatively, he is focusing on next season budgets and recruiting potential players to the club, with the goal of having Leo Messi on his squad next season.
On a normal circumstance, even if Barcelona fielded all their best players in the match, they wouldn't have escaped Celta Vigo because the energy with which Celta Vigo came into the match was far much higher than that of Barcelona.
Celta Vigo knew that it's either they win or they get relegated,
While Barcelona knows that if they lose they are already Champions. So, there's nothing at stake. The match was quiet interesting as Celta Vigo fans were emotional throughout the match.
It was a do-or-die match for Celta Vigo. This team had the possibility of going to the relegation zone if they did not win this match. And so their aim in this match was to beat Barcelona by any means possible. On the other hand, since Barcelona has already won the title, they are not playing the matches very seriously. As the match was not important for Barcelona. And Barcelona was missing several key players. So Celta Vigo got a good chance to win this match. However, if Barcelona's goal in this match was to win, then Celta Vigo could not have defeated an experienced team like Barcelona so easily. Barcelona won the home match against Celta Vigo.