Following this stunning turn-around of fortunes for Barcelona, here is a flashback of some of the best come-from-behind wins recorded in Europe's premier club competition.
Gijon spoiled Asier Illarramendi's return to Real Sociedad's midfield after rejoining from Real Madrid this week when they held the Basque club, coached by Scot David Moyes, to a 0-0 draw in San Sebastian.
Christian Eriksen kept Tottenham Hotspur's hopes of completing a remarkable salvage job and reaching the last 16 of the Champions League alive with a late winner in his side's 1-0 victory over Inter Milan at Wembley on Wednesday.
Lionel Messi and Luis Suarez were on target as holders Barcelona thrashed Real Sociedad 5-2 to reach the King's Cup semi-finals for the seventh successive year with a 6-2 aggregate victory on Thursday.
Real Madrid's stuttering season continued as they were reduced to 10 men and then slumped to an 11th La Liga defeat of the campaign by going down 3-1 at Real Sociedad.
News of all that's transpired on and off the football field
Barcelona goalkeeper Marc-Andre ter Stegen is wary of the danger posed by Juventus forward Paulo Dybala ahead of their opening Champions League Group D clash on Tuesday.
Summary of sports events and persons who made news on Wednesday
Barcelona forwards Lionel Messi, Philippe Coutinho and Luis Suarez combined to devastating effect to hammer Girona 6-1 on Saturday as they went 10 points clear at the top of La Liga and set a club record of 32 games unbeaten in the league.
Atletico Madrid maintained a two-point lead in La Liga with a 3-0 victory at Las Palmas and Barcelona and Real Madrid stayed hard on their heels with thumping wins over Athletic Bilbao and Sporting Gijon on Sunday.
The numbers behind Saturday's La Liga "Clasico" between Real Madrid and Barcelona at the Bernabeu stadium (1600 GMT).
News of all that's transpired on and off the football field
A round-up of Wednesday's night's UEFA Chmpions League matches.
Olivier Giroud said he had breathed a sigh of relief after scoring the first goal in Euro 2016 and wished the boos he has faced throughout his career would now go away. The France striker, who opened the scoring with a brave header in Friday's 2-1 win over Romania on Friday, now has eight goals from his last eight games for the national team. Giroud, who has scored 18 goals for France, is the team's most prolific striker since Didiers Deschamps took over as coach in 2012. "My statistics speak for themselves," Giroud told a news conference at France's training camp outside Paris on Saturday. "People say I get better through adversity but I'd be happy to live without all the mudslingers," he added.
Real Madrid's faltering title defence continued as they were held to a thrilling 2-2 draw at Celta Vigo on Sunday which saw them fall 16 points behind runaway leaders Barcelona, who beat Levante 3-0 to stay nine points clear at the top of La Liga.
A summary of sports events and sports persons, who made news on Thursday.
Germany coach Joachim Loew has named four talented youngsters, including three uncapped players, in his preliminary 27-man squad for Euro 2016.
News of all that's transpired on and off the football field
A summary of Thursday's Euro 2020 qualifying matches.
Luis Suarez and Lionel Messi scored stunning goals to edge Barcelona towards a fourth consecutive King's Cup final with a 2-1 win at Atletico Madrid on Wednesday, although the holders were lucky to survive a late onslaught from the hosts.
Real Kashmir FC overcame the mental turmoil arising out of uncertain situations back home as they beat Chennai City FC 1-0 through a last minute goal in the 129th Durand Cup fixture, in Kalyani, on Wednesday.
Deputy Chef de Mission Balbir Singh Kushwaha said that facilities at the Games Village were good.
If Arsenal are to have any chance of overturning a 2-0 deficit against Barcelona in the Champions League next month they must be sharper in front of goal, says manager Arsene Wenger. They worked hard to keep the world's most fearsome attacking trio of Lionel Messi, Luis Suarez and Neymar relatively quiet until the 71st minute of Tuesday's last 16, first-leg tie but by then they had spurned two excellent chances to take the lead. Alex Oxlade-Chamberlain was the culprit in the first half, anxiously shooting straight at Barcelona goalkeeper Marc-Andre ter Stegen, then Frenchman Olivier Giroud failed to convert the kind of close-range header he regularly dispatches. They are the sort of opportunitites that must be taken in the return at the Nou Camp on March 16 when Arsenal face what many pundits think is 'mission impossible' after Messi showed how it should be done with two late goals at The Emirates. The Argentine's first strike followed a clinical counter-attack and his second from the penalty spot in the 83rd came after he was brought down by substitute Mathieu Flamini. "We had an unbelievable chance in the first half and the way we finished our chances is a problem," Wenger told reporters after his side's demoralising defeat.
After Central defender Harpreet Singh headed the first one in the 37th minute, two goals in two minutes immediately after resumption took the issue beyond Yemen's reach.
Lionel Messi fittingly sealed Barcelona's 26th La Liga title on Saturday by coming off the bench to score the goal in a 1-0 win over Levante in front of a jubilant Nou Camp crowd, who celebrated a remarkable eighth league crown in 11 years.
Cameroonian teenager Wilfrid Kaptoum scored a late equaliser to give Barcelona a 1-1 draw at Valencia that wrapped up an 8-1 aggregate success in their King's Cup semi-final on Wednesday.
Substitute Fernando Torres scored his 100th Atletico Madrid goal as they rallied from 1-0 down to beat visiting Eibar 3-1 and go level with Barcelona at the top of La Liga on Saturday. Two headed goals from corner kicks seven minutes apart by central defenders Jose Maria Gimenez and Saul put Atletico on track after Keko had given Eibar the lead in the 46th. Coach Diego Simeone will be glad his side ended a run of four matches without a win in La Liga and the King's Cup while Torres, who netted in added time, had been waiting since a victory at Eibar in September to reach his century for the club. Atletico are unlikely to stay joint top on 51 points beyond Sunday as rampant Barcelona, who have a better goal difference and two matches in hand, visit bottom team Levante. Real Madrid, away to Granada on Sunday, are in third place, four points off the pace.
Xavi slams Real Madrid over Casillas exit
Barcelona will put Manchester City to the sword if they commit the same kind of errors as they did in their Champions League encounter last month, coach Luis Enrique said.
Rediff.com brings you a collection of some of the best sports images from around the world.
Barcelona eased into the King's Cup last 16 when goals from Pedro, Cristian Tello and Neymar secured a 3-0 second-leg victory at home to third-tier Cartagena on Tuesday for a 7-1 aggregate success.
A summary of Thursday night's UEFA Champions League matches.
Messi opened the scoring after two minutes and eight seconds, the quickest goal of his career, slipping the ball through Thibaut Courtois' legs from a tight angle.
When Barcelona host local rivals Espanyol on Saturday hoping to edge closer to the La Liga title, many may be haunted by Raul Tamudo's 89th minute equaliser which wrecked their title bid in 2006/07.
Cristiano Ronaldo scored a sensational goal and was then sent off for a combination of his provocative celebration and for diving as Real Madrid beat Barcelona 3-1 in an explosive Spanish Super Cup first leg on Sunday.
Andres Iniesta will always be a hero to Barcelona.
Real Madrid's hopes of overhauling La Liga leaders Barcelona suffered a stinging blow when they were held to a 2-2 draw at home to Valencia.
Cristiano Ronaldo's bullet header helped Real Madrid to a 2-0 victory .
Lionel Messi overhauled Real Madrid great Alfredo Di Stefano's La Liga goals tally as Barcelona and Atletico Madrid each won on Saturday to pull three points clear of Real at the top.
Alex Oxlade-Chamberlain became the second England international to leave Arsenal in two days when he joined Premier League rivals Liverpool for a reported 40 million pounds on Thursday.