At first glance, you might think little has changed in Europe's top leagues, as the leaders going into the weekend were all still there at the end of it. Scratch beneath the surface, and the programme threw up one or two momentous results. Chelsea ran up a crucial victory in a battle of the English titans, Bayer Leverkusen extended their advantage, the goals rained in for OL and OM, and Bordeaux slumped to a shock defeat.
FIFA.com reviews the weekend action from around Europe's leading leagues.
Premier League: Chelsea down United
In the Premier League's big showdown, Chelsea beat champions Manchester United 1-0, with skipper John Terry netting the winner a quarter-hour from time. The west London club stretched their lead in the standings, but United slipped to third as their rivals all made up ground.
Arsenal are now level on points with the Red Devils in second after defeating Wolverhampton Wanderers 4-1. Elsewhere, Aston Villa breezed past Bolton Wanderers 5-1, and Spurs beat Sunderland 2-0. Crisis club Liverpool urgently need to take maximum points against Birmingham City when they round off the programme on Monday.
Top three: Chelsea (30 points), Arsenal, Manchester United (both 25)
Bottom three: West Ham United, Wolverhampton Wanderers (both 10), Portsmouth (7)
Leading scorers: Fernando Torres (10 goals), Didier Drogba (9), Darren Bent (8)
Weekend stat: 6 - Leaders Chelsea maintained their 100 per cent record at Stamford Bridge with a sixth win out of six. The Blues have scored 15 goals in front of their home support and conceded just one.
La Liga: Barça and Real rumble on
Real beat Atletico 3-2 in the Madrid derby to stay hot on the heels of champions Barcelona, who remain undefeated after beating Real Mallorca 4-2. Barça and Bundesliga leaders Bayer Leverkusen are the only clubs in Europe's leading leagues yet to lose this term.
The chasing pack all won: Sevilla beat Villarreal 3-2, Valencia overcame Real Zaragoza 3-1, and Deportivo La Coruna triumphed 2-0 away to Getafe. The sides in third, fourth and fifth remain well in touch for now at four, five and seven points respectively off the lead.
Top three: Barcelona (26 points), Real Madrid (25), Sevilla (22)
Bottom three: Atletico Madrid (7 points), Deportivo Xerez (6), Malaga (5)
Leading scorers: David Villa (8 goals), Zlatan Ibrahimovic, Lionel Messi (both 7)
Weekend stat: 10 - Atletico have now failed to beat Real in the Madrid derby for a full ten years. Atletico's most recent success dates back to 30 October 1999, a 3-1 victory at the Bernabeu.
Bundesliga: Leverkusen clear as headliner ends in stalemate
Leaders Bayer Leverkusen were the only team in the leading group to win at the weekend. They did it in style too, as their home meeting with Eintracht Frankfurt was basically all over at 3-0 after just 11 minutes. Bayer added a fourth shortly before the end.
The chasing pack all dropped points. Werder Bremen drew 1-1 with Borussia Dortmund, and Hamburg were held 2-2 in Hanover, the home side equalising from the spot two minutes from time. The big game on Matchday 12 between Bayern Munich and Schalke also ended with honours even at 1-1 after 90 minutes. Bottom club Hertha Berlin slid further from safety in a 1-0 home defeat to Cologne. The men from the capital have now lost ten of their 12 league games this term.
Top three: Leverkusen (26 points), Bremen, Hamburg (both 23)
Bottom three: Nuremberg (9), Bochum (8), Hertha Berlin (4)
Leading scorers: Stefan Kiessling (8 goals), Andreas Ivanschitz, Kevin Kuranyi, Zvjezdan Misimovic, Claudio Pizarro (all 6)
Weekend stat: 150 - Argentine international Martin Demichelis (Bayern) made his 150th German top flight appearance in the meeting with Schalke
Serie A: Juve and Milan benefit from Inter slip
Champions and Serie A leaders Inter Milan dropped points after a run of five wins on the spin. Jose Mourinho's side were forced to come from behind to salvage a 1-1 draw at home to Roma.
All but one of Inter's rivals won to breath new life into the title race. Juventus and AC Milan beat Atalanta (5-2) and Lazio (2-1) away from home. Fourth-placed Fiorentina won by the only goal of the game away to Udinese, and Genoa in sixth beat Siena 4-2, but fifth-placed Sampdoria lost 2-0 in Cagliari.
Top three: Inter (29 points), Juventus (24), AC Milan (22)
Bottom three: Livorno (9), Catania (8), Siena (6)
Leading scorers: Antonio di Natale (9 goals), Marek Hamsik, Diego Milito, Giampaolo Pazzini (all 7)
Weekend stat: 167 - Juve striker David Trezeguet struck his 167th goal to draw level in the club's all-time scoring chart with Omar Sivori, a legend of the 50s and 60s. The players share fourth spot in the ranking, which is headed by 262-goal man Alessandro Del Piero.
Ligue 1: Goalfest in Lyon, Bordeaux stay top
Despite an unexpected 2-0 defeat away to Lille, champions Bordeaux stay top of the standings by a point. Les Girondins benefited from a draw between their closest rivals.
But what a draw it was, as Lyon and Marseille ended their meeting deadlocked at an astonishing 5-5. OL looked to have it in the bag when Michel Bastos put them 5-4 up in the last minute, but Stephane Mbia levelled in stoppage time to round off the spectacular entertainment. Auxerre beat Le Mans 1-0 to go third, dislodging Monaco, who were held to a goalless draw by Grenoble. With 12 games played, leaders Bordeaux and sixth-placed Montpellier are separated by just four points.
Top three: Bordeaux (25 points), Olympique Lyon (24), Auxerre (23)
Bottom three: Boulogne (9), Le Mans (8), Grenoble (1)
Leading scorers: Nene (9 goals), Mamadou Niang, Asamoah Gyan, Youssouf Hadji, Kevin Gameiro, Loic Remy, Moussa Sissoko (all six)
Weekend stat: 1 - Last-placed Grenoble's stalemate in Monaco earned them their first point of the campaign.
In Denmark, last season's double winners Copenhagen travelled to Aalborg but fell to a third defeat of the season. Leaders Odense beat Silkeborg 1-0, and second-placed Esbjerg won 4-2 away to Brondby.
With two rounds to go in Russia, Rubin Kazan are poised to retain the title. The UEFA Champions League hopefuls beat CSKA Moscow 2-0, but closest pursuers Spartak Moscow fell 2-1 away to Krylia Sovetov Samara, leaving the champions five points clear.