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SPAIN
Messi shredded Atletico's vaunted defense and passed for Neymar to score in the 12th minute and for Suarez to double the lead at Camp Nou in the 35th.
He then made up for committing a penalty that led to Mario Mandzukic scoring from the spot in the 57th by scoring himself three minutes from time.
After giving Barcelona control of second place, one point behind Real Madrid, Messi put to bed an entire set of rumors following a tumultuous week for the Catalan club that included the firing of its sports director and its president calling for early elections this summer.
"I have never asked that they replace a coach, and I never would," said Messi. "This hurts. And it comes from people who want to hurt the club."
Sevilla moved into fourth, two points behind Atletico, with a 2-0 win at Almeria.
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ENGLAND
A Southampton shirt had to be scrambled from the dressing room before the forgetful Dusan Tadic could enter the Old Trafford pitch.
Within minutes, it was being ripped off again as the second-half substitute celebrated scoring the goal that gave Southampton its first win at Manchester United in 27 years.
"When I wanted to come on, the shirt and shin pads were not there (in the dugout), but I don't know what happened," Tadic said after clinching the victory. "This isn't important. It's important we won."
Ronald Koeman's Southampton side ended United's 10-game unbeaten run in the Premier League and dislodged the hosts " managed by fellow Dutchman Louis van Gaal " from third place.
Arsenal is only a point behind fourth-place United after Alexis Sanchez scored two and created one in a 3-0 victory over Stoke.
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FRANCE
Lyon moved to the top of the French league after striker Alexandre Lacazette, one of eight homegrown players in its starting lineup, scored twice in a 3-0 win against Toulouse to take his season's tally to 19 in 20 games.
The win moved Lyon one point clear of second-place Marseille, and an impressive four clear of two-time defending champion Paris Saint-Germain, which continues to struggle despite having five players in its squad costing more than 40 million ($47 million), while the nucleus of Lyon's side costs nothing.
Lacazette scored twice inside the first 30 minutes and 21-year-old midfielder Nabil Fekir added the other goal just after the break to make it eight league goals in 16 games.
Also, fifth-place Monaco is five points behind PSG after drawing 0-0 at home to sixth-place Bordeaux, and seventh-place Nantes drew 0-0 at home to Metz.
A minute's silence was held before all matches this weekend in memory of the 17 people killed in a terrorist rampage in Paris this week.
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ITALY
Serie A leader Juventus won 3-1 at Napoli to move three points clear of Roma, which fought back from two goals down to draw 2-2 against Lazio in the capital derby.
Miguel Britos leveled for Napoli, canceling out a stunning Paul Pogba volley, but Juventus restored its advantage five minutes later through Martin Caceres, who was making his first appearance in more than three months.
Napoli had a late equalizer ruled out for a foul on Juventus goalkeeper Gianluigi Buffon before Arturo Vidal sealed the match in stoppage time.
Napoli remained fourth, a point behind Lazio after the latter's derby disappointment.
Francesco Totti scored both of Roma's goals in the second period. Roma's talismanic captain celebrated his second in unusual fashion by taking a selfie of himself on the pitch.
