Defending champion Iga Swiatek eases into US Open second round

World number one Iga Swiatek launched her US Open title defence on Monday with a ruthless 6-0, 6-1 win over Sweden's Rebecca Peterson in the first round. Swiatek, whose grip on top spot is under threat from Aryna Sabalenka in New York, needed just 58 minutes to dispose of the 86th-ranked Peterson.