Messi, who has struggled for form in recent weeks due to a niggling injury, looked on a mission to grab the winner and after twice coming close he completed his treble to put Barca ahead in the 85th minute, reacting quickly to a poor Sevilla clearance to dink the ball over goalkeeper Tomas Vaclik.
When Juventus coach Massimiliano Allegri was greeted with a hail of eggs and spat at on his first day at work he could not have imagined he would lead them to the brink of an unprecedented treble of titles in his first season.
A round-up of Saturday's action in the Premier League.
Barca captain Messi opened the scoring with a "Panenka" penalty chipped straight down the middle in the 17th minute after Luis Suarez was fouled in the area, putting the home side ahead in the tie after a goalless first leg in France.
Manchester City swept aside second-tier Cardiff City 2-0 with first-half goals from Kevin De Bruyne and Raheem Sterling on Sunday to reach the FA Cup fifth round in their quest to win an unprecedented four trophies this season.
Lionel Messi had to wait 12 years and endure a goal drought of eight games against Chelsea but he finally broke his duck in Tuesday's 1-1 Champions League last 16, first leg draw.
News of all that's transpired on and off the football field
Ecuador's World Cup ended because of a single moment of brilliance by the England captain, said Ecuador coach Luis Fernando Suarez.
UEFA elects a new president on Wednesday whose main task will be to stop what European officials say is an inexorable slide towards a breakaway football Super League open only to wealthy clubs such as Real Madrid and Manchester City.
Real Madrid keeper Iker Casillas believes the European champions have a side with the potential to be one of the all-time greats and it will be with likely trepidation that an off-colour Liverpool visit the Bernabeu on Tuesday.
The favourites to win next year's World Cup in Russia were given navigable paths to the last 16 with the coaches of Germany, Brazil, Argentina and Spain having reason to feel reasonably optimistic after Friday's draw.
The Qatar World Cup has delivered a rich feast of soccer for the past month
Ecuador coach Luis Fernando Suarez is keeping the balance amidst the World Cup hype by reading inspirational books
Check out the top footballers of the weekend...
Liverpool's hopes of winning their first title in 24 years suffered a huge setback when they lost 2-0 at home to Chelsea and Manchester City took advantage with a 2-0 victory at Crystal Palace.
The FIFA 2022 World Cup will kick-off in Qatar on Sunday, November 20. Here is a list of the 26-man squads playing in the quadrennial global football extravaganza.
Included in Barcelona squad to face Dortmund
Barcelona teenager Ansu Fati scored twice to lead his side to a 2-1 win at home to Levante on Sunday, finding the net in a league game for the first time in more than four months and becoming the youngest player to net a La Liga double. Romelu Lukaku scored a quickfire second-half double to give Inter Milan a 2-0 win at Udinese on Sunday, ending their run of three successive 1-1 league draws.
Match-by-match facts and statistics ahead of the Premier League
Barcelona snapped a four-match winless run in La Liga with a 4-2 home victory over title rivals Sevilla on Saturday to reclaim top spot but the triumph was marred by talisman Lionel Messi fracturing his arm and being ruled out for three weeks.
Images from the UEFA Champions League matches played across Europe on Wednesday
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.
The early signs from the Confederations Cup are that Brazil's fans can help rather than hinder the team at home, reports of Spain's demise are premature and the heat is going to cause problems for everyone at the World Cup.
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.
News of all that's transpired on and off the football field
Liverpool see Tuesday's Champions League game at holders Real Madrid as a chance to prove their doubters wrong and get their season back on track, said coach Brendan Rodgers and midfielder Jordan Henderson.
News of all that's transpired on and off the football field.
Neymar's record-breaking 222 million euros ($263 million) transfer from Barcelona to Paris St Germain is set to be completed this week with the French club poised to pay his release clause.
Liverpool's 1-0 defeat by Aston Villa on Saturday was more than an early season setback - it raised the question of whether they have the strength in depth to cope with the dual challenge ahead of them this term.
The match marks just the second time, and first in 35 years, that El Clasico will be played outside Spain.
From the FIFA World Cup finals to the spot-fixing scandals that rocked Indian cricket, we pick the key sporting events on the 2014 calendar.
News of all that's transpired on and off the football field.
An Eden Hazard hat-trick swept Chelsea back to the top of the Premier League on Saturday when they beat Newcastle United 3-0 at Stamford Bridge after previous leaders Arsenal were thrashed 5-1 at Liverpool.
Lionel Messi came off the bench to preserve Barcelona's unbeaten run in La Liga with a sensational late equaliser in a thrilling 2-2 draw at Sevilla on Saturday as the runaway leaders came back from two goals down in the space of a minute.
A round-up of Tuesday's action in the UEFA Champions League.
Argentina, helped by a majestic Juan Roman Riquelme performance, maintained their perfect record in the World Cup qualifiers on Saturday while Ecuador coach Luis Fernando Suarez quit after a 5-1 loss to Paraguay. Riquelme scored two second half goals, including an exquisite free kick, in a 3-0 win over Bolivia which left Argentina with nine points from three games in the South American group.
Reuters sports writers chose their team of the tournament.
La Liga leaders Barcelona handed Real Madrid more hope in the title race as they drew 0-0 at Athletic Bilbao on Sunday, only avoiding defeat thanks to some outstanding saves by Marc-Andre ter Stegen.
'Les Bleus' will be inspired by the two-decade anniversary of their only World Cup win in 1998, while double winners Uruguay's modern generation are desperate to recreate the black-and-white-era glories of their 1930 and 1950 trophies.