Team-mate Juninho, meanwhile, feels the Brazil v England quarter-final could well produce the tournament winners.
Zimbabwe now join Mozambique in the semi-finals with two more quarter-final matches still to be played.
Germany will play the winners of the Italy-Ukraine quarter-final in Dortmund on Tuesday at 2000 BST.
BBC: SPORT | Football | World Cup 2006 | Teams | Germany | Klinsmann hails 'fantastic' fans
Robertson has reached the quarter-final stage in six ranking events but never been further.
It was disappointing that we didn't hit our target of reaching the cup quarter-final in Wellington.
Every team in it has to go be that step ahead from the quarter-final.
When he was only 17, he led Hendry 5-3 overnight before losing their UK quarter-final 9-5.
They eventually exited the tournament after a 24-28 loss to Argentina in the quarter-final play-offs.
Just when everything was rosy chez Rooney, fate intervened in the quarter-final with Portugal.
Youzhny's quarter-final opponent, Philipp Kohlschreiber, retired after losing the first set when he felt unwell.
Ferguson received treatment on Tuesday and missed the Scottish Cup quarter-final against Partick at Ibrox.
BBC: SPORT | Football | My Club | Rangers | Ferguson delays ankle operation
The announcement comes less than two weeks before the club's Carnegie Challenge Cup quarter-final with Bradford Bulls.
In Friday's earlier quarter-final, Serbia's Djokovic secured a 7-6 (7-2) 6-2 win over Mario Ancic of Croatia.
Andrew Little scored the opener and Gregg Wylde and Kyle Hutton also featured in the quarter-final win.
The team was on the way home from a European Cup quarter-final tie against Red Star Belgrade.
Both Rooney and Hernandez scored early for Manchester United in their FA Cup quarter-final match against Chelsea.
FORBES: Rooney, Hernandez And Why Liverpool Fans Will Soon Be Supporting Manchester United
During Euro 96 most of us would agree that Spain were the better side in the quarter-final.
The team were on the way home from a European Cup quarter-final tie against Red Star Belgrade.
Victory over Kelly would bring Casey a quarter-final against Retief Goosen or US Open champion Angel Cabrera.
Obviously some people think it's shocking, but many players would die to play a Grand Slam quarter-final.
Somerset now have 14 points from 11 games and are still well positioned for a quarter-final place.
BBC: Marcus Trescothick leads Somerset to win over Middlesex
From the quarter-final stage onwards, archers shoot a maximum of five sets, with three arrows per set.
Gaudio awaits the winner of Wednesday's second quarter-final between fellow Argentine David Nalbandian and Brazil's Gustavo Kuerten.
Denmark's Kristian Pless enjoyed a surprise 6-3 6-1 win over local hero Nicolas Escude in their quarter-final.
Dunga saw his men suffer a 2-1 quarter-final defeat at the hands of the Netherlands in Port Elizabeth.
The winner of the replay faces a quarter-final trip to Reading or West Bromwich Albion on 7 March.
He was sent off during the quarter-final defeat by Portugal in Gelsenkirchen for a stamp on Ricardo Carvalho.
And Holland's Martin Verkerk booked his quarter-final place with a 6-3 6-4 win over Swedish veteran Thomas Enqvist.
"The defining moment in this tenure was that we achieved a quarter-final place, " said WRU chairman David Pickering.
Querrey will play the winner of the quarter-final between Germany's Rainer Schuettler and Israel's 14th seed Dudi Sela.
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