Aryna Sabalenka begins US Open title defence with victory against Camila Osorio

Reigning women’s singles champion wins 6-2, 6-4Men’s 10th seed Arthur Fils beaten by Stefanos TsitsipasAryna Sabalenka said she is determined to look ahead, rather than dwell on a difficult past few months, after beginning her US Open title defence with a 6-2, 6-4 win against Camila Osorio.“Th…