What's at stake at the BMW Championship It is the tournament within a tournament. This week's BMW Championship is plenty big on its own -- for golf history buffs, it is an extension of the Western Open, which dates to 1899 -- with an $8.75 million purse and $1,575,000 going to the winner. But there is a prize beyond the prize, namely next week's Tour Championship and the opportunity to play for the $10 million FedEx Cup bonus that goes to the leader of a season-long points list. The top 70 qualified to play at Conway Farms, where the BMW Championship begins Thursday and where they'll be vying for the 30 spots that will make up the Tour Championship field in Atlanta. The top 5 after this week are in position to win the FedEx Cup with a victory at East Lake. read more http://www.espn.com/golf/story/_/id...ip-rory-mcilroy-phil-mickelson-jason-day-more