Don Bradman scored fastest 2000 runs in test cricket in just 22 innings.
viv Richards
Nathan Astle
Virendra sehwag
In test cricket it was gilchrist......
its nj astle in 2001-02just in 153 balls
The fastest hundred in ODI Cricket was scored by Abraham Benjamin de Villiers (AB de Villiers) of South Africa in 31 balls. The record of fastest hundred in Test Cricket is shared by Sir Viv Richards of West Indies and Misbah-ul-Haq of Pakistan. Both scored hundred in 56 balls. The fastest century in Twenty20 Cricket was scored by Richard Levi of South Africa in 45 balls.
Sunil Gavaskar scored 63 in the 4th test against Pakistan in the 1986/87 season to become the first player to score 10000 runs
Virender Sehwag holds the record for scoring the fastest triple century in Test cricket. He achieved this milestone in 278 balls against South Africa in 2008.
sachin tendulkar has scored about 33000 runs total in ODI and test cricket
perhaps between Len Hutton and Godfrey Evans of England . Reportedly they scored only 9 runs in 175 minutes and drew the test !
Kevin Pietersen has scored 6,361 runs so far in Test Cricket. (Updated figure as on 22.08.2011).