100 by TOP three batsmen in an innings

Gautam Gambhir (167), Virender Sehwag (131) and Rahul
Dravid (144) - the top three players for India have registered
Centuries at Kanpur against Sri Lanka in the second test, providing the third instance when No 1, 2 and 3 have posted centuries in the same innings for India, equalling
Australia's tally of three such instances.
Against Bangladesh in the 2007 Mirpur Test, the top
four Indian batsmen had made centuries - Dinesh Karthik (129),
Wasim Jaffer (138 not out), Rahul Dravid (129) and Sachin
Tendulkar (122 not out). The said instance is the only one in
Test annals when the top four batsmen have made centuries in
the same Test innings.
Here is the list of all instances when top three or four batsmen have made hundred in a same test innings.
England Vs S Africa at Lord’s 1924
Jack Hobbs 211, Herbert Sutcliff (122) and Frenk Woolley (134*)
Australia Vs West Indies at Port of Spain 1954-55
CC McDonald (110), Arthur Morris (111) and Neil Harvey (133)
Australia Vs West Indies at Bridgetown 1964-65
Bill Lawary (210), Bob Simpson (201) and Bob Cowper (102)
India Vs Australia at Sydney 1985-86
Sunil Gavaskar (172), K Srikkanth (116) and Mohinder Amarnath (138)
Australia Vs England at Lord’s 1993
Mark Taylor (111), Michael Slater (152) and David Boon (164*)
South Africa Vs Zimbabwe at Harare 2001-02
HH Gibbs (147), Gary Kirsten (220) and JH Kallis (157*)
New Zealand Vs India at Mohali 2003-04
Mark Richardon (145), Lou Vincent (106) and Scott Styris (119)
India Vs Bangladesh at Mirpur 2007
Dinesh Karthik (129), Wasim Jaffer (138*), Rahul Dravid (129) and Sachin
Tendulkar (122*).
South Africa Vs England at Lord’s 2008
Greame Smith (107), Neil McKenzie (138) and Hashim Amla (104*)
India Vs Sri Lanka at Kanpur 2009-10
Gautam Gambhir (167), Virender Sehwag (131) and Rahul Dravid (144).