Kerber to Cincinnati final, one win from world number one

(Reuters) - Australian Open champion Angelique Kerber cooled off red-hot Simona Halep in straight sets on Saturday to reach the final of the Southern & Western Open in Cincinatti, one win away from taking over as world number one. Second seed Kerber beat the third-seeded Romanian, winner of 13 successive matches, 6-3 6-4 to set up a Sunday final against Karolina Pliskova, needing a victory to reach the top of the rankings and end the long reign of American Serena Williams. Williams has ruled