Adam Gilchrist holds the record of maximum number of sixes in tests.
adam gilchrist
sachin tendulkar has record of playing maximum world cup
jawaid miandad 6 double centuries
Don Bradman
JB Hobbs holds the record of hitting maximum number of 50 in first class cricket.
emineam
I think it's Chandrasekhar.
brian Lara
Jagati srikumar
Brendon McCullam
salim
Saurav ganguly