SPORTS

Day wins BMW Championship, locks up top spot in playoff series finale and world ranking

  • Daniel Berger watches his tee shot on the first hole during the final round of the BMW Championship golf tournament at Conway Farms Golf Club, Sunday, Sept. 20, 2015, in Lake Forest, Ill. (AP Photo/Charles Rex Arbogast)

    Daniel Berger watches his tee shot on the first hole during the final round of the BMW Championship golf tournament at Conway Farms Golf Club, Sunday, Sept. 20, 2015, in Lake Forest, Ill. (AP Photo/Charles Rex Arbogast)  (The Associated Press)

  • Jason Day of Australia, watches his tee shot on the first hole during the final round of the BMW Championship golf tournament at Conway Farms Golf Club, Sunday, Sept. 20, 2015, in Lake Forest, Ill. (AP Photo/Charles Rex Arbogast)

    Jason Day of Australia, watches his tee shot on the first hole during the final round of the BMW Championship golf tournament at Conway Farms Golf Club, Sunday, Sept. 20, 2015, in Lake Forest, Ill. (AP Photo/Charles Rex Arbogast)  (The Associated Press)

  • Scott Piercy watches his tee shot on the first hole during the third round of the BMW Championship golf tournament at Conway Farms Golf Club, Sunday, Sept. 20, 2015, in Lake Forest, Ill. (AP Photo/Charles Rex Arbogast)

    Scott Piercy watches his tee shot on the first hole during the third round of the BMW Championship golf tournament at Conway Farms Golf Club, Sunday, Sept. 20, 2015, in Lake Forest, Ill. (AP Photo/Charles Rex Arbogast)  (The Associated Press)

Jason Day won the BMW Championship on cruise control Sunday with a mostly stress-free final round of 2-under 69 that vaulted him into the top spot in the world ranking.

The Australian zoomed out to a big lead by shooting 61 and 63 in the first two rounds at Conway Farms and was never seriously challenged after that. His 22-under total was the second-lowest on tour this year good for a six-shot victory over rookie Daniel Berger. Scott Piercy finished third, seven strokes back.

The win Sunday was Day's fifth of the season and his second in the FedEx Cup playoffs. He heads to the series finale at East Lake in Atlanta next week as the front-runner in the 30-man field. He also leap-frogged Jordan Spieth and Rory McIlroy in the bargain to claim the No. 1 spot in the world ranking.