New signings Radamel Falcao and Diego scored to give Atletico Madrid a 2-0 win over Celtic as the Europa League group stage kicked off on Thursday.
Images from the football matches played across Europe on Sunday.
Iain Hume struck from a spot-kick after some Debjit Majumder heroics under the bar as a 10-man Atletico de Kolkata secured a hard-fought 1-0 victory over Delhi Dynamos.
Barcelona closed to within a point of La Liga leaders Real Madrid when Lionel Messi scored one goal, created two and conceded a penalty in a 3-1 win at home to champions Atletico Madrid on Sunday that eased pressure on under-fire coach Luis Enrique.
The result also means second-placed Real Sociedad can reclaim top spot if they beat Eibar on Sunday.
Real Madrid coach Carlo Ancelotti is looking for a big improvement from his side when they play their first home game of the LaLiga season, against Valladolid on Sunday, with Kylian Mbappe making his Santiago Bernabeu debut
Alvaro Morata again proved decisive from the bench by striking a late winner against Athletic Bilbao and firing a lacklustre Real Madrid to the top of La Liga on Sunday. The Spain international has been afforded limited opportunities in his first season back at Real following two years with Juventus, struggling to usurp first choice forwards Gareth Bale, Cristiano Ronaldo and Karim Benzema. Morata has made just four league starts, but has scored four times in all competitions.
Olympiakos Piraeus secured a surprise 3-2 victory over last year's Champions League runners-up Atletico Madrid to make a dream start to their Group A campaign on Tuesday.
Atletico Madrid's Brazilian striker Diego Costa scored twice as they came from behind to beat Levante 3-2 at home on Saturday to go three points clear at the top of La Liga.
News of all that's transpired on and off the football field
FC Goa fought back from a goal down to hold defending champions Atletico de Kolkata 1-1 in their second round match of the Indian Super League at the Nehru stadium, in Fatorda, Goa, on Wednesday.
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.
News of all that's transpired on and off the football field
Atletico Madrid striker Diego Costa haunted Arsenal again by firing his side to a 1-0 win in Thursday's Europa League semi-final second leg to send the Spaniards into the final and deny Arsene Wenger a dream end to his long reign as Arsenal coach.
Defending champions Atletico de Kolkata came from a goal down to beat Chennaiyin FC 2-1 and jump to the second spot in the Indian Super League football tournament, in Kolkata, on Wednesday.
Atletico Madrid fell to their heaviest league defeat of the season
Real Madrid's Gareth Bale came off the bench and coolly converted a controversial penalty to secure a 2-1 win at Levante in La Liga on Sunday as the European champions rode their luck to stay within nine points of leaders Barcelona.
Saul Niguez announced himself as one of Europe's most promising midfielders by scoring a stunning individual goal to edge Atletico Madrid a step closer to their second Champions League final in three years.
Juventus striker Carlos Tevez would be a perfect fit for Atletico Madrid and the La Liga club are in talks with the Argentine's agents, coach Diego Simeone has said.
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.
Diego Simeone may not have the stomach to reinvent Atletico Madrid again after they suffered another morale-shattering loss to Real Madrid in Saturday's Champions League final.
Atletico Madrid made sure of at least a third-placed finish in La Liga and secured a berth in the Champions League group stages for next season with a 3-1 win away to struggling Celta Vigo on Wednesday.
News of all that's transpired on and off the football field
Former champions Atletico de Kolkata notched up their first victory of the tournament with a 1-0 win over Kerala Blasters FC in the Indian Super League football match at Jawaharlal Nehru Stadium in Kochi, on Wednesday.
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.
Second-half headers from Diego Godin and Raul Garcia gave holders Atletico Madrid a 2-0 win over Valencia and a place in the King's Cup quarter-finals by 3-1 on aggregate.
Atletico Madrid made a typically aggressive start to lay the foundations for a 2-0 victory at home.
A first half Tiago header set up Atletico Madrid's 2-0 victory over Espanyol as they seek to get back on track following a stuttering start to the La Liga season.
All the action from football matches played in Europe on Wednesday
News of all that's transpired on and off the football field
Atletico Madrid have been unable to repeat the magnificent achievements of last season in this campaign but can congratulate themselves on a job well done if they secure a lucrative Champions League berth on Saturday.
Atletico Madrid captain Gabi said his team would not be lulled into complacency by Barcelona's faltering form when they host the Champions League holders in the second leg of their quarter-final on Wednesday.
Real Madrid forward Vinicius Jr scored a hat-trick to help the LaLiga champions snap a two-game winless run in all competitions.
PSV Eindhoven played for more than 20 minutes with 10 men but held on for a goalless draw at home to Atletico Madrid in the first leg of their Champions League last-16 tie on Wednesday.
A towering Diego Godin header secured Atletico Madrid a 1-1 draw against Barcelona and a first La Liga title for 18 years in a thrilling climax to the campaign on Saturday.
Libertadores Cup favourites Atletico Mineiro took a big step towards the quarter-finals with a 2-1 away win over 10-man Sao Paulo in the first leg of their last 16 tie on Thursday.
Inter Milan have completed the signing of Brazil centre back Miranda from Atletico Madrid as they look to shore up a defence that struggled during a disappointing 2014-15 season.
Champions Barcelona turned on the style to hammer Atletico Madrid 5-2 and consolidate their position at the top of the Spanish Primera Liga on Saturday. The visitors, who were thumped 6-1 in the same fixture last season, have yet to win a game in the new campaign but came out with an ambitious attacking lineup.
Atletico Madrid have one foot in the final of the Europa League after a Radamel Falcao double fired the 2010 winners to a 4-2 semi-final first leg win at home to La Liga rivals Valencia on Thursday.
