Spain and Portugal played out an entertaining 0-0 draw on Friday as both sides prepared for this month's European Championship.
Barca, who were without injured talisman Lionel Messi, started on the back foot and fell behind when Nabil Fekir netted with a sublime angled strike in the 15th minute. Griezmann, who joined Barca last month from rivals Atletico Madrid, scored four minutes before halftime to level the scores.
Striker Costa ends second spell at Atletico Madrid.
Lionel Messi created a goal and scored another as Barcelona came from behind to beat struggling Rayo Vallecano 3-1 at home on Saturday and stay seven points clear at the top of La Liga.
Striker Mariano's header was glanced onto the crossbar by Sociedad's Andoni Gorosabel while the loose ball fell to Marco Asensio, whose shot was deflected wide for a corner from which Raphael Varane header hit the top of the bar.
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News of all that's transpired on and off the football field
Chelsea may have restored some breathing space over Manchester City with a 2-0 win over Newcastle United on Saturday but they have not regained the form that made them runaway title favourites earlier in the season.
The Frenchman, voted the world's third best player of 2016, has been the subject of intense transfer speculation since signing a new contract with Atletico in May 2017.
De Bruyne out for up to six weeks due to injury, says Guardiola.
The Portuguese forward put his team on the verge of their third final in four years and took his tally to 103 goals in the competition as he helped Madrid vanquish their neighbours at the Santiago Bernabeu.
If Atletico Madrid's 2013 King's Cup triumph was a shock and their 2013-14 La Liga title a surprise, few would raise an eyebrow if Diego Simeone's ruthlessly efficient side were to win another major trophy.
Real Madrid rested Cristiano Ronaldo and suffered a fifth Liga defeat of the season as Espanyol's Gerard Moreno struck late for a 1-0 win over the Spanish and European champions.
Here are five talking points from the weekend in La Liga:
European champions Portugal came up against a superior version of themselves as they were knocked out of the World Cup by Uruguay on Saturday. Although Uruguay forward Edinson Cavani and Portugal's Cristiano Ronaldo will grab the headlines -- the former for his two brilliantly goals and the latter for what could well be his World Cup farewell -- Uruguay owed their 2-1 win to a superb all-round performance.
The 29-year-old's composure on the ball, ability to pick a pass and tough tackling paid dividends at both ends of the pitch in the must-win game against Nigeria.
Lionel Messi scored a hat-trick as Barcelona clinched a 25th La Liga title on Sunday after winning 4-2 at Deportivo La Coruna despite throwing away a two-goal lead in a thrilling game which also confirmed Depor's relegation.
News of all that's transpired on and off the football field
Heavyweights Arsenal, Atletico Madrid and Lazio took big steps towards reaching the Europa League semi-finals after convincing home first-leg victories and RB Leipzig also stayed on course with a 1-0 win over Olympique de Marseille on Thursday.
'This crisis is going to be much bigger than anything we've experienced and anything we do will not be enough but my aim is to help, it might not be enough in some cases but I have to try'
Villarreal's slide continued as a Diego Castro header gave Getafe a 1-1 draw in La Liga on Sunday but the match was overshadowed by a serious injury to Mateo Musacchio.
IMAGES from the soccer matches played in Spain and Italy on Saturday
Athletic Bilbao ended Getafe's run of four straight wins and climbed above them into fifth place in La Liga when Aymeric Laporte's early bullet header secured a 1-0 win at the Coliseum in Madrid on Monday.
Lionel Messi was back in scoring business for Barcelona on Sunday, leading them to a resounding 4-0 win at home against Villarreal in a near-perfect La Liga opener for the Catalans under new coach Ronald Koeman.
Atletico Madrid striker Alvaro Morata scored a goal and then missed a penalty as his side began their La Liga campaign with an eventful and nervy 1-0 win at home to Getafe on Sunday which saw both teams reduced to 10 men.
Real Madrid defender Raphael Varane made up for the absence of Sergio Ramos by scoring one goal and making another to help his side to a hard-fought 3-0 win at Getafe. La Liga leaders Barcelona were held to a 2-2 draw at struggling Espanyol on Saturday as China striker Wu Lei came off the bench to grab a late equaliser in a pulsating city derby.
Leaders Barcelona and Real Madrid were held to draws while Sevilla made up ground on the top two and Alaves slipped after a promising start. Here are five talking points from the weekend's La Liga action.
Canada beat USA to enter quarters, Argentina overpower Chile in opening tie
Images from Wednesday's action in the UEFA Champions League.
River Plate battled back to beat arch Argentine rivals Boca Juniors 3-1 in extra-time in an unforgettable and unique Copa Libertadores final second leg, played in Madrid after violence had seen the original game postponed.
News of all that's transpired on and off the football field
Paris St Germain's Zlatan Ibrahimovic scored his first Ligue 1 goal this season before missing a penalty as they beat En Avant Guingamp 3-0 to extend their lead to four points on Tuesday.
News of all that's transpired on and off the football field.
Chelsea midfielder Cesc Fabregas gave his manager a reminder of his talents by scoring twice in extra time as they fought back from two goals down to knock Premier League champions LeicesterCity out of the League Cup 4-2 on Tuesday.
United are 16th in the standings with a game in hand heading into the international break.
Carlos Tevez has been included in the squad for the first time in three years for next month's friendlies in England against Croatia and Portugal.
Teenager Curtis Jones grabbed a 58th-minute winner as an injury-hit Liverpool qualified for the knockout stage of the Champions League with a 1-0 win over Ajax Amsterdam at Anfield on Tuesday.
Real Madrid's early-season woes deepened when they lost 2-1 at home to La Liga champions Atletico Madrid, while substitute Neymar struck twice in Barcelona's 2-0 win against visiting Athletic Bilbao on Saturday.
Argentina reached the World Cup semi-finals for the first time in 24 years on Saturday when an early goal by Gonzalo Higuain and a strong defensive display proved enough to beat a disappointing Belgium side 1-0.
Atletico Madrid tore apart city rivals Real Madrid 4-0 at home to open up the La Liga title race on Saturday in a triumph crowned by a spectacular overhead kick goal by Saul Niguez.
