Costa turned Juanfran's low cross into the net in the 69th minute for Atletico's third goal in the first leg of the last 16 tie against third division Lleida but immediately limped to the sidelines. He did return to the pitch, however, and completed the game despite bleeding from his knee.
New Valencia coach Gary Neville remains without a La Liga win after his side twice recovered from a goal down to rescue a fortunate 2-2 draw at home to Getafe on Saturday.
Vietto slotted the ball home with seven minutes to go after Karim Benzema had given visitors Real the lead early on.
Lionel Messi was in inspired form as champions Barcelona hammered Celta Vigo 5-0 on Saturday, recording a fourth straight league victory which keeps them top of La Liga after Real Madrid had put the pressure on the Catalans with a 4-1 win at Eibar.
The enduring image of Luis Enrique for many soccer fans is the Spain player with blood gushing from his nose after a vicious elbow from Italy defender Mauro Tassotti during the 1994 World Cup quarter-final in Boston.
Barcelona wrap up 23rd La Liga crown with Lionel Messi goal.
News of all that's transpired on and off the football field
Manchester City's quadruple bid remained intact as Ilkay Gundogan and Kevin de Bruyne secured a 2-0 win at Everton in their FA Cup quarter-final clash
Underlying tensions mean Luis Enrique will not be remembered with the same reverence as Pep Guardiola, even though he has delivered a similar trophy haul.
Cristiano Ronaldo shrugged off the boos of his own supporters to fire Real Madrid to a 3-0 win over Real Sociedad on Sunday.
Messi stretched Barca's lead by finishing off a brilliant move with Luis Suarez in the 50th minute and the Uruguayan joined his close friend and strike partner on 15 league goals by robbing an Eibar defender and finishing inside the near post in the 68th.
Sergio Ramos made amends for his untimely own goal last week at Sevilla by scoring twice as Real Madrid bounced back from two successive defeats by beating Malaga 2-1 on Saturday to go four points clear at the top of La Liga.
Sergio Ramos has so often been Real Madrid's man of the moment but the captain saw the tables turn as his own goal helped his former club Sevilla to a 2-1 win over the La Liga leaders on Sunday, ending a record-breaking 40-game unbeaten run.
One of the most disappointing aspects of Barcelona's failure to win major silverware last season was the lack of on-field chemistry between Lionel Messi and Neymar.
Zinedine Zidane has said his side are in a delicate situation as they prepare to host arch-rivals Barcelona in a La Liga title showdown on Sunday
IMAGES from the soccer matches played across European leagues over the weekend.
Paul Pogba repaid some of his world record transfer fee with two goals as Manchester United rediscovered their early-season shine, cruising to a 4-1 Europa League win over Fenerbahce to go top of their group on Thursday. Pogba scored a penalty and rifled United's third into the top corner. Anthony Martial also netted from the spot and Jesse Lingard fired home in the second half before former Old Trafford favourite Robin van Persie pulled one back for Fenerbahce. Inter Milan and AS Roma, though, had more testing evenings. Coach Frank de Boer breathed a sigh of relief when Inter survived an onslaught from Southampton to end a three-match losing streak with a 1-0 victory while Roma conceded twice late on to draw 3-3 at home to Austria Vienna.
IMAGES from the La Liga matches played on Sunday
New Manchester City manager Pep Guardiola has come to England to prove himself and wants to produce the "beautiful football" for which his teams are famed, he told reporters on Friday. Speaking at his first news conference since joining the club, the former Barcelona and Bayern Munich coach said his personal learning curve would be steep as he came to terms with his new team and adapted to the rigours of the Premier League. "It's the right moment to come here and prove myself," he said. Asked if he could get City to play the sort of beautiful football trademarked by Barcelona, he added. "That's why I am here. I want to play the way I want. But wherever you go you have to adapt to the quality of the players. We have to find each other as soon as possible.
News of all that transpired on and off the football field.
News of all that's transpired on and off the football field
Real Madrid and Barcelona pulled two points clear in La Liga when Cristiano Ronaldo set a club scoring record in Real's 3-0 stroll against Levante and Neymar hit four as Barca beat Rayo Vallecano 5-2 on Saturday.
Philippe Coutinho scored his first league goal since returning to Barcelona to help his side draw 1-1 at home to an excellent Sevilla side in La Liga on Sunday.
Manchester United took over at the top of the Premier League while Barcelona's Argentine forward Lionel Messi could be out for up to two months with a knee injury and rampant Bayern Munich extended their perfect start to seven league wins.
Atletico Madrid demonstrated their remarkable team spirit to come roaring back from two goals and a man down to draw 2-2 at Liga debutants Girona on Saturday, after Antoine Griezmann had been sent off for the first time in his career.
Neymar scored the opener to continue his rich vein of form as 10-man Barcelona won a one-sided La Liga derby against Espanyol.
A summary of sports events and sports persons, who made news on Wednesday.
Barcelona's lead at the top of La Liga was cut to two points on Saturday as they squandered a two-goal advantage to draw 2-2 at Sevilla while Real Madrid powered their way to a 3-0 home win over Eibar.
United's Ibrahimovic, Roma's Dzeko find the net thrice to give clubs first leg advantage
La Liga leaders Real Madrid dropped points at home for only the second time this season.
Atletico Madrid slumped to a 3-0 defeat at resurgent Real Sociedad on Thursday which means Barcelona need one more victory to wrap up a 25th Spanish La Liga title while Malaga were relegated after losing 1-0 at Levante.
A round of Saturday's matches in Series A, La Liga and Bundesliga.
A summary of Saturday's action in Ligue 1, La Liga and Serie A.
News of all that's transpired on and off the football field
Manchester United's woes deepened as stunning goals by Moussa Sow and Jeremain Lens gave Fenerbahce a 2-1 Europa League win on Thursday that left Jose Mourinho's side facing a battle to reach the knockout stages.
Barcelona first struggled to come to terms with their shock 4-0 defeat to Paris St Germain in the Champions League last 16 first leg but have sparkled in their last two games and are daring to believe they can defy history by reaching the quarter-finals.
A summary of Saturday's action in LaLiga, Ligue 1 and the Bundesliga.
Cristiano Ronaldo bagged his first five-goal haul in Real Madrid's 9-1 hammering of Granada while title-chasing Bayern Munich and Chelsea won again in Germany and England.
The last-16 knock-out round kicks-off this week with Chelsea visiting Paris on Tuesday; Zidane to coach Real Madrid as manager in his first match in Europe
La Liga champions Barcelona began the new campaign with a 3-0 win over Alaves on Saturday with the help of a spectacular under-the-wall free kick from Lionel Messi, who scored twice, and a curling shot from substitute Philippe Coutinho.
