Multiple incentives for Day on BMW title defence

(Reuters) - World number one Jason Day heads into his title defence at this week's BMW Championship in Indiana with one eye firmly fixed on Player of the Year honours as he bids for his fourth PGA Tour win of the season. The Australian is effectively vying with second-ranked American Dustin Johnson for the coveted accolade and has targeted at least one victory in the final two FedExCup playoff events to make his case. Once the season is over, the PGA Tour rank and file will vote for their Player