MADRID (AFP) Barcelona moved eight points clear of Real Madrid at the top of the Spanish league with a comfortable 3-0 win at lowly Valladolid on Saturday to round off an impressive first half of the season. Two goals in as many minutes from Xavi (20 min) and Dani Alves (22) set the tone before Lionel Messi scored his sixth goal in three games to take his seasons tally to 15. Real, beaten 1-0 by Athletic Bilbao last time out, are now under extreme pressure to respond with a home win over Malaga on Sunday or risk Barcelona running away with the title. It is exactly halfway through the season and Barca are still unbeaten and their tally of 49 points from 19 games is just one less than their record set last season. Two goals in two minutes changed the game for us and made it more comfortable, said Barca coach Pep Guardiola. We got 50 points last season and 49 this season so we are on same track but there are lots of games left in the season. The statistics make impressive reading with Barcelona notching 15 wins and four draws while they have the best defence conceding 10 goals and the best attack with 49 goals. Barcelona become only the fifth team to go unbeaten for the first half of the season, joining Real Madrid, Athletic Bilbao, Espanyol and Real Sociedad in the elite club. With Sergi Busquets injured midfielder Seydou Keita made a timely return from the African Cup of Nations following Malis elimination. Keita spurned a good chance early on with a header while Messi went close on 10 minutes before the breakthrough goal created and scored by Xavi on 20 minutes. Xavi started the move with a neat flick and raced into the penalty area to volley in a pinpoint cross from Alves. Alves was causing havoc down the right and scored himself two minutes later when his overhit cross floated into the top corner and the Brazilian celebrated with a samba dance. Valladolid had their chances with Diego Costa forcing a fine save from Victor Valdes three minutes prior to Xavis opener but there was a sense of inevitability that Barca would win after going 2-0 up so early on. After 54 minutes Messi, who at 22 became the youngest Barca player to reach 100 goals last weekend, finished a fine move lashing home after a fine lay-off from Zlatan Ibrahimovic. In other matches, Deportivo La Coruna climbed up to fourth with a 3-1 home win over Athletic Bilbao at the Riazor Stadium on Saturday. Brazilian international Filipe Luis scored the opener on 49 minutes but injured his ankle as he collided with the goalkeeper and was stretchered off with what looked like a serious injury that could potentially endanger his World Cup dream. Compatriot Juca added a second after 59 minutes before a Diego Colotto (79) own goal tested Depors nerves in the closing stages but Pablo Alvarez made it 3-1 late on and the Depor players held up three fingers as a tribute to Filipe Luis who dons the number three shirt. The win helped Depor put their 3-0 Kings Cup loss to Sevilla behind them and go fourth a point above Sevilla and Real Mallorca. Bilbao come crashing back down to earth after their 1-0 win over Real and stay down in seventh. Earlier, Sevilla enjoyed a huge slice of luck as they ended a run of four straight defeats with a 1-0 home win over Almeria on Saturday and move level on points with fifth-placed Real Mallorca. Spanish international Alvaro Negredo scored the decisive goal on nine minutes to shoot down his old club Almeria although the waterlogged pitch played a decisive role with captain Wilmer Acasietes back pass stopping dead on the soaked surface to gift Sevilla their crucial goal. Sevilla coach Manolo Jimenez paid tribute to his players for fighting their tiredness brought on by playing in the league, Kings Cup and Champions League. There are no words to express how proud I am of the team, said Jimenez. At half-time there were three players wanting to change. Fatigue is beginning to show because of all the competitions we are playing in. It was only Negredos fifth of a difficult debut season since his club record 15 million euro move from Real Madrid but it is a vital one to stop the losing sequence and push Sevilla closer to the Champions League spots.