World number one Rory McILroy leads the Fed Ex cup series after adding the Deutsche Bank Championship to his list of titles following a one shot victory in Boston.
The 23 year old finished on 20 under following a final round of 67, the US PGA Champion started the day 3 shots off the lead.
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Louis Oosthuizen was second on 19 under while Padraig Harrington and Graeme McDowell ended on 2 and 7 over.
