Former India skipper Mahendra Singh Dhoni has once again proved the critics wrong by establishing himself as a master of close finish when he belted an 87 not out to complete a hat trick of half-centuries to help the men-in-blue clinch the third ODI by 7 wickets and a historic 2-1 bilateral series win over Australia at the MCG on Friday. Criticised for a sluggish knock in the first ODI, which India lost by 34 runs in Sydney, the Ranchi stumper's half-century in the second game in Adelaide was instrumental in helping the tourists level the series with a 6-wicket verdict.