Top 10 Fastest Fifties in T20 international cricket: T20 is the shortest form of cricket in the world today. Just 20 overs per innings give the adrenaline based rush to both fans and players. There is no space for mistakes or missed opportunities in this format.
As it is also a format most favorable to the batsmen, we look at the Top 10 fastest 50s ever made in T20 internationals.
(Number of balls is the balls taken to reach the score of 50 runs and not the final score)

10.Yuvraj Singh 20 balls vs. Australia Durban, ICC World T20, 2007

Read more at http://www.crictracker.com/top-10-fastest-fifties-in-t20-international-cricket/