Mamelodi Sundowns of South Africa stunned record eight-time trophy holders Al Ahly of Egypt 5-0 Saturday in the first leg of a CAF Champions League quarter-final near Pretoria.

It was the heaviest defeat suffered by the Cairo Red Devils in a CAF match and leaves them with virtually no chance in the second leg next weekend.   

Themba Zwane and Wayne Arendse scored to give the hosts a 2-0 half-time advantage at a packed 25,000-seat Lucas 'Masterpieces' Moripe Stadium in Atteridgeville.

Brazilian Ricardo Nascimento converted a penalty two minutes into the second half and goals from Uruguayan Gaston Sirino and Ahly reject Phakamani Mahlambi completed the rout.

The clubs meet again next Saturday in Egypt and Ahly will have to score at least five goals to have a chance of avoiding elimination from the elite African club competition.