5. Joe Root averages 81.25:

Joe Root, who has been touted as next big thing for England, is placed fifth in the all-time list of the successful ODI run chases while averaging at 81.25.
The 26-year-old top-order Yorkshire-born batsman Root is averaging 49.37 in 87 innings of 92 ODIs. He has scored 3,802 runs and remained not out for 10 times.
The right-handed batsman Root racked up 10 hundreds and 22 fifties during his ODI career. He has the highest score of unbeaten 133.4.