Barca had the chance to go top after Real drew a fourth consecutive game in all competitions for the first time in over a decade but they were rattled by rampant Celta
IMAGES from the football matches played across Europe on Sunday.
Real Madrid moved back to the top of La Liga as Vinicius Junior scored both goals in a 2-1 victory at Elche on Saturday.
In his absence, the league champions have made a lacklustre start to the season, losing their opening game to Athletic Bilbao before taking just four points from fixtures against Real Betis and Osasuna.
Images from Saturday's action in La Liga.
Sevilla scrambled to the top of La Liga with a scrappy 1-0 win at home to Real Valladolid, on Sunday, moving one point clear of champions Barcelona at the summit.
Lionel Messi had two free-kick attempts while ex-Sevilla midfielder Ivan Rakitic narrowly missed the target from inside the area.
Barca's fans held up a mosaic before the game reading "Infinite Iniesta". They later revealed a banner saying "Thanks for so much" in tribute to a player who came through the club's academy and spent 16 years pulling the strings in midfield, winning nine Liga titles, four Champions Leagues and six domestic Cups.
Champions Real Madrid were beaten at home by promoted Cadiz, while Barcelona fell to their first defeat in La Liga under new coach Ronald Koeman as they lost to Getafe.
The win took Barca to the top of the standings on 68 points although Real Madrid, on 65, will reclaim their lead due to their superior head-to-head record if they beat Real Mallorca at home on Wednesday.
Barca play their final league La Liga game of the season at Alaves on Sunday before hosting Napoli on Aug. 8 in the second leg of their Champions League last-16 tie.
Real Madrid's Javier Hernandez struck twice as they came from behind to beat Celta Vigo 4-2 away and keep the pressure on Barcelona at the top of La Liga on Sunday.
The club could also sell other players to in order to create a new contract for Messi, who is the top scorer in La Liga this season with 13 goals.
Real Madrid clinched a record-extending 34th La Liga title with one game to spare by beating Villarreal 2-1 at home on Thursday thanks to two goals from their leading scorer Karim Benzema. Real have 86 points after 37 games, seven more than deposed champions Barcelona who were beaten 2-1 at home to Osasuna.
The defender later became the club's assistant coach before embarking on an eventful career as a head coach, managing Dutch sides Ajax Amsterdam, PSV Eindhoven and Feyenoord plus Premier League sides Southampton and Everton and La Liga's Valencia.
A Marco Asensio-inspired Real Madrid crushed Eibar 3-0 to close the gap on La Liga leaders Barcelona to five points on Sunday, with Karim Benzema starting on the bench.
Barca finished the season second in the standings on 82 points, four behind champions Real Madrid who visit Leganes later on Sunday. Alaves are 16th on 39.
"Both in terms of what you save on the wage bill as well as the money you make, it would've been desirable. But this is something the coaching staff have to consent to and that's not my place.
Manchester City squandered a three-goal lead to draw 3-3 with Feyenoord in the Champions League on Tuesday.
Barcelona players had their families and toddlers join in their La Liga title celebrations at the Camp Nou in Barcelona on Sunday.
Barcelona coach Pep Guardiola and leading scorer Lionel Messi described their 2011 La Liga crown as the toughest of titles after securing top spot with a 1-1 draw at Levante on Wednesday.
Barcelona great Xavi Hernandez has said it is his dream to coach his former side
Records promise to tumble again in the 2012-13 La Liga season as world powerhouses Real Madrid and Barcelona resume their duel for supremacy, threatening to cast Spain's other 18 clubs even further adrift.
Real Madrid got their LaLiga title defence off to a limp start as they were held to a 1-1 draw at Mallorca.
Barcelona travel to newly-promoted Osasuna without their first choice front line.
Pedro scored twice as Barcelona made heavy weather of beating promoted Levante 2-1 to move five points clear at the top of La Liga on Sunday.
Barcelona failed to capitalise on Real Madrid dropping points against Villarreal as the La Liga champions were held to a 1-1 draw at home to Atletico Madrid on Wednesday, while talisman Lionel Messi limped off with a groin injury.
Messi agreed no-fee Barca exit clause in case of Catalan independence
Lionel Messi marked his record 506th appearance for Barcelona in La Liga by scoring a penalty but the Catalans could only draw
Luis Suarez picked up a hamstring strain in Tuesday's Champions League match at Bayern Munich.
The Catalans have kept five clean sheets in their last six games, which bodes well for their title run in.
The season kick backs into action with a local derby between Sevilla and Real Betis on June 11 and there will be fixtures for the following seven days, with Barca hosting Leganes on June 16
Barca face La Liga leaders Real Sociedad on Wednesday hoping to build on their slender 1-0 victory over Levante after suffering painful defeats by Cadiz and Juventus and making their worst start to a league season in 33 years.
It was Messi's 30th goal in 39 competitive games against Atletico
Thierry Henry was on target as Barcelona cruised to a 4-0 home win over Racing Santander on Saturday to move five points clear at the top of La Liga.
Barcelona midfielder Andres Iniesta has failed to recover from a calf strain and will miss Tuesday's Champions League Group F match at APOEL Nicosia.
Neto will sign a four-year deal with Barcelona that will keep him at the club until the end of the 2022-23 season and he will replace Dutch goalkeeper Jasper Cillessen who moved the other way on Wednesday.
The favourites to replace Erik ten Hag, who was sacked as Manchester United manager on Monday.
Lionel Messi became Barca's record appearance maker in the competition with 76 Copa matches.
Barcelona have no plans to re-sign Neymar from Paris St Germain, the club's vice-president Jordi Cardoner said on Friday, knocking down media reports the La Liga champions were ready to tempt the Brazilian forward back to the Nou Camp.