What a magnificent week it has been for England's top clubs in the European Champions League with the strong likelihood now that all four English teams will progress to the quarter-finals of the competition.
This surely confirms that the English Premier League is now the No.1 football competition in the world.
In contrast, if Italian side Inter Milan fails to turn around its two-goal deficit to Liverpool next Wednesday morning (Australian time) then no other country will have more than one representative in the last eight while all four English clubs - Arsenal, Chelsea, Manchester United (which have already secured their places) and Liverpool - would all progress to the last eight.
This raises the fascinating possibility of not only an all-English match-up in the quarter-finals or semi-finals - and who could forget Liverpool's memorable semi-final win over Chelsea in 2005 - but also the first all-English final in world football's most prestigious club tournament.
The only previous occasion when two teams from the same country have qualified for the final was Spanish clubs Real Madrid and Valencia in 2000 and Italian giants AC Milan and Juventus in 2003.
But the start of this year's knockout phase definitely revealed a changing of the guard as far as the perennial Champions League contenders are concerned.
This was never more so than in Milan on Wednesday morning (Australian time) when the reigning champions and seven-time winners were overwhelmed at home by the young Gunners.
It was the first time Milan had ever been beaten on home soil by an English club and the win surely ranks as one of the finest achievements in the great career of Arsenal manager Arsene Wenger.
Arsenal's team against Milan had an average age of just 25, compared to 32 for Milan, but the Italians' experience was no match for the sheer enthusiasm and determination of the EPL leaders - who are aiming to win Europe's biggest club competition for the first time having been runners-up to Barcelona in 2006.
The Gunners' superb 2-0 away victory was even more meritorious considering it came at a time when they are struggling to hold off Manchester United in the race for the EPL title - having seen their lead at the top of the table cut from five points to one point in the past fortnight - while they are still recovering from the loss of star striker Eduardo for the rest of the season with a broken leg.
Chelsea's 3-0 win over Greek side Olympiakos on Thursday morning might have been expected but it was still a vital one for the Blues and particularly their under-pressure manager Avram Grant.
Grant has struggled to win the backing of the fans and the players since replacing the popular Jose Mourinho this season and there were increased murmurings over his position after Chelsea's recent surprise loss in the League Cup final to Tottenham.
But if Grant can win the European Champions League for Chelsea - which has never reached the final having bowed out in the semis in three of the past four years - then Grant's position will not only be safe but he will probably exceed even Mourinho, the man who ended Chelsea's 50-year title drought in 2005, in Stamford Bridge folklore.
And then of course there are Liverpool and Manchester United - England's two best-credentialed teams when it comes to Europe having won the top prize some seven times between them.
It all adds up to some potentially mouth-watering clashes between the big four of English football over the next two months and certainly adds credence to the constant claims emanating out of England that the EPL has now succeeded Italy's Serie A and Spain's Primera Liga as the No.1 football competition on the planet.