Step 1 : Introduction to the question "Which batsman has hit 6 sixes in an over in a T20 international?"
...The over was bowled by Dutch leg-spinner Daan van Bunge. On 19 September 2007, during a match between England and India in the inaugural T20 World Cup, Yuvraj Singh became the first batsman to hit six sixes in an over in a T20 International, in an over bowled by Stuart Broad.
