Angelique Kerber into US Open semi-finals
New York : Angelique Kerber reached her second US Open semi-final on Tuesday with a 7-5, 6-0 victory over 2015 runner-up Roberta Vinci which also edged her closer to the world number one spot. Kerber , who made the last-four in 2011, will face either two-time runner-up Caroline W
