graeme smith
438 by south africa
Highest T20I score is 260-6 for Sri Lanka against Kenya in 2007 T20 World Cup in South Africa.
400
The highest innings score in test cricket is 960.
Austraila highest score in one day cricket - 434/4
The highest score is by Saeed Anwar. It is 194 runs.
its sachin tendulker 200 not out against south Africa at hydrbad in India
765-8
156
The highest score by Pakistan in Test cricket is 765-6 declared, achieved against Sri Lanka in the 2008-09 season.
Sachin Tendulkar's highest score is in test. Which 246 runs.
Gary Kirsten (South Africa) holds the record of highest individual score in Cricket World Cup. He scored 188* against UAE in 1996 world cup.