There is no change once again at the summit of Eurosport's Power Rankings this week with a Cristiano Ronaldo-inspired Manchester United remaining top dog in Europe.

We take into account both domestic and European performances, plus the relative difficulty of each team's league, to find out who is the best team in Europe.

United were held to a draw by Middlesbrough at the weekend but, thanks to their commanding 2-0 win over Roma in the Champions League, Alex Ferguson's side not only managed to hang on to top spot, but also to extend their lead.

Their nearest rivals are now Barcelona who, despite drawing with Getafe in La Liga, leapfrog Arsenal into second largely thanks to their 1-0 win over Schalke earlier in the week.

The Gunners' two 1-1 draws in their double-header with Liverpool sees them slip into third, even though the results were kinder for the Reds, who jump into fifth.

But the biggest movers this week are the Italian teams in the top half of our table. Roma's defeat to United proved costly and Luciano Spalletti's side drop four places into eighth, while Internazionale move up three places into fourth after a 2-0 win over Atalanta.

Chelsea's midweek conquerors Fenerbahce remain in 10th, although their impressive victory coupled with a win in the Turkish league closes the gap on Sevilla in ninth.

Finally, Porto celebrated winning the Portuguese title at the weekend by inching up a place in the Power Rankings table to seventh while Bayern's draw with Getafe in the UEFA Cup means they end the week on 13th.

EUROPEAN POWER RANKINGS

1 (1) Manchester United - 24.44

2 (3) Barcelona - 22.29

3 (2) Arsenal - 21.67

4 (7) Internazionale - 20.63

5 (6) Liverpool - 20.45

6 (5) Chelsea - 20.10

7 (8) Porto - 20.09

8 (4) Roma - 20.07

9 (9) Sevilla - 19.74

10 (10) Fenerbahce - 19.56

11 (11) Everton - 19.09

12 (13) Real Madrid - 17.52

13 (12) Bayern - 17.50

14 (14) Hamburg - 17.03

15 (15) Milan - 16.88

16 (17) Olympiacos - 16.64

17 (16) Lyon - 16.30

18 (20) Werder Bremen - 16.08

19 (18) Fiorentina - 16.02

20 (19) Rangers - 15.84

HOW IT WORKS

Scores are based on points per game in domestic league and European games.

Domestic points per game are multiplied by the league coefficient - either 4, 4.5 or 5 - with teams in stronger leagues getting more credit.

Champions League (or Super Cup) victories are counted from the third qualifying round onward as three points for a win and multiplied by a coefficient of 5.

UEFA Cup victories are counted from the first round as three points for a win and multiplied by a coefficient of 4.

Domestic and European totals are then added together. If a side has played in both Champions League and UEFA Cup, its European total is an average of the two scores.

League coefficients:

England, Spain, Italy = 5

Germany, Portugal, France = 4.5

Others = 4

Example: Manchester United

77 points from 33 Premier League games = 2.33 points per game.

Multiplied by league coefficient of five - 2.33 x 5 = 11.67

23 points from 9 Champions League games (including qualifying) = 2.56 points per game.

Multiplied by Champions League coefficient of five - 12.50

Total score = 11.67 + 12.50 = 24.44

Eurosport