Lasith Malinga's title winning last over for MI , Mumbai Indians defeated defending champions Chennai Super Kings by 1 run in a thriller in Hyderabad on Sunday to become the 1st team to win the Indian Premier League 4 times.Shane Watson played a starring role for Chennai Super Kings in an IPL final for the second successive year but his efforts were in vain as MI made a spectacular comeback.It was a tense final. It was a thriller. After fortunes shifted both ways, Chennai Super Kings needed 9 off the final over but Lasith Malinga, who had gone for 20 in his previous over, gave away only 7 in the final over of the season to seal a sensational victory for Mumbai Indians.