Michael Vaughan v Glenn McGrath
Key battles: Australia v England
Vaughan has played four previous one-day internationals against Australia, averaging 25.50, slightly above his career average of 24.43.
Despite taking 267 career wickets, McGrath has never dismissed Michael Vaughan in a one-day international.
In four innings in the World Cup, Vaughan has scored two half-centuries, 51 against the Netherlands and 52 against Pakistan.
McGrath boasts the best bowling figures ever at any World Cup after taking an incredible 7-15 against Namibia in Potchefstroom.
In his one and only innings in Port Elizabeth, Vaughan was dismissed for 14 by Namibia's Rudi van Vuuren.
Surprisingly, McGrath has never taken a wicket at St George's Park in three previous one-day internationals.
Andrew Flintoff v Ricky Ponting
Ponting has an excellent record against England. In 15 matches, he has scored 525, averaging a very healthy 47.73.
Flintoff has only faced the Australians on one previous occasion, taking 1-56 in England's five-run defeat in Melbourne earlier this year.
In his only previous match at St George's Park in April 2002, Ponting hit 92 in Australia's three-wicket victory over South Africa.
Flintoff was England's best player in their 82-run defeat to India. He claimed figures of 2-15 before hitting 64 runs in 73 balls.
Ponting has scored the majority of his 5,697 one-day runs batting at number three. In 132 innings, he has scored 4,869 runs coming in after the first wicket.
More than half of Flintoff's 44 one-day wickets have been catches. In 51 matches, he has claimed 23 wickets as catches.
AUSSIES WIN THRILLER
REACTION AND ANALYSIS