Last season's runners-up in Italy, AC Milan, drop two places to 12th after they were stunned on the opening weekend with a 1-0 defeat at home to newly-promoted Sampdoria.
There are no changes in the top nine of this week's European Power Rankings despite Real Madrid's shock defeat at Getafe. The Spanish champions have a huge gap between them and third-placed Manchester United.
Elsewhere in Spain Atletico Madrid's thumping 4-0 win over athletic Bilbao on Monday night shifts them up one place and into the top 10 at the expense of Shakthar Donetsk.
HOW IT WORKS
To determine our Power Rankings, we use the Euro Club Index, which scientifically analyses hundreds of thousands of matches from the top divisions in all European nations as well as Europa League and Champions League games.
The Index takes into account all matches played over an eight-year period but with recent results carrying more weight than older ones.
The performance of a league's teams in the Champions League and Europa League reflects the rise or fall of the sporting level in that league. So, for example, if English teams perform well in Europe, all Premier League teams receive a small bonus in their ECI score. The ranking and its predictive power are thus made even more accurate.