Original sentence: From the 2005-06 season onwards, the "Big Four" (Manchester United, Chelsea, Liverpool and Arsenal) have dominated the top four spots, thus a place in the UEFA Champions League
Edited sentence: From the 2005-06 season onwards, the "Big Four" (Manchester United, Chelsea, Liverpool and Arsenal) have dominated the top four spots (Only Everton in 2004 - 2005 have broken this sequence), thus a place in the UEFA Champions League