Top two teams qualify for the round of 16, with the third-place team dropping into the Europa League and the bottom club eliminated from Europe.
If two teams are level on points, head-to-head record is the first tie-breaker.
GROUP A
Borussia Dortmund are almost home and hosed with a 100 percent record, three points clear of Atletico Madrid. Dortmund's place in the knockout rounds will be confirmed if they win at Atleti on Nov. 6 or if Monaco vs. Club Brugge — who both have a slim chance of progressing — is a draw that day. Atleti have a five-point cushion to the group's bottom two teams, and they can book their place with a home win over Atleti next time out if Monaco vs. Club Brugge is a draw. The only realistic chance for the bottom two is that Atleti lose to Dortmund.
GROUP B
The group is a carbon copy of Group A. This time, Barcelona have the 100 percent record and will be through if they win away to Inter Milan, who have six points, or Tottenham vs. PSV Eindhoven is a draw. Inter, meanwhile, will be through if they beat Barca and Tottenham vs. PSV Eindhoven, who both have one point, is a draw. Spurs or PSV must win and really need Inter to be beaten at home.
GROUP C
Liverpool, on six points, have the edge, but this group is exceptionally tight, and no team can advance on Matchday 4. It is very evenly poised with Napoli on five points and Paris-Saint Germain on four. With Napoli hosting PSG next time out, Liverpool know they can take a firm grip on the group by winning away to Red Star Belgrade, who have one point, but the Serbian outsiders could give themselves a chance with a shock win against the Reds.
GROUP D
Porto are well placed in the group on seven points and will expect to take a giant leap toward the knockout rounds when they host Lokomotiv Moscow, who have lost all three of their matches, on Nov. 6. But they cannot secure qualification until Matchday 5. Schalke, on five points, and Galatasaray, on four points, meet in Germany in two weeks, and the Bundesliga outfit know they will almost be through if they can win that match.
GROUP E
Ajax and Bayern Munich are in control of the group, on seven points with identical records and four points ahead of Benfica. Ajax will book their place in the round of 16 if they can win at Benfica on Nov. 7, and that result would also allow Bayern to secure safe passage with a victory at home to rock-bottom AEK Athens. While a draw at home to Ajax would keep Benfica mathematically in the hunt, they need to win that game to bring themselves back into contention. AEK will have to win all three of their remaining games to have a chance of going through.
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Ogden: Man United limping along under MourinhoMark Ogden reports from Old Trafford after Jose Mourinho's news conference following his side's 1-0 defeat against Juventus in the UEFA Champions League.
GROUP F
It is tighter in this group, with Manchester City a point ahead of Lyon and both Hoffenheim and Shakhtar Donetsk a further three points back. But City can book their place with a win at home to Shakhtar, should Lyon pick up a victory at home to Hoffenheim. Lyon cannot qualify on Matchday 4, but Hoffenheim would be eliminated if they lose to Lyon and City beat Shakhtar. However, if Hoffenheim or Lyon can pick up an away win next time out, it will make the group very interesting.
GROUP G
Real Madrid and Roma are well placed on six points, two better off than CSKA Moscow. No team can qualify on Matchday 4, though bottom club Viktoria Plzen will be eliminated should they lose at home to Madrid and Roma win in Moscow. CSKA probably need to avoid defeat to Roma to stay in with a realistic chance of making it through, while victory would move them into the top two.
GROUP H
Juventus have a 100 percent record and will be through, should they win at home to Manchester United on Nov. 7. United, meanwhile, have just a two-point cushion over third-placed Valencia and could be overtaken should they lose in Turin. The final-day meeting of Valencia and United on Dec. 12 looks like it will be decisive, but Young Boys will have a say if they pull off a shock in Spain on Matchday 4
Kwese