4) Ashish Nehra has the most economical 4-over spell in IPL 

Ashish Nehra”s spell of 4-1-6-1 is the cheapest in terms of runs in IPL history (minimum 4 overs). This spell came for Delhi Daredevils against Kings XI Punjab at Bloemfontein on 15 May 2009 in second edition of IPL. Fidel Edwards is second on list with 4-1-6-0 for Deccan Chargers vs Kolkata Knight Riders at Newlands Cape Town on 19 April 2009.