US Open draw: Serena Williams starts against Kristie Ahn, AngeliqueKerber meets Alja Tomljanovic

The women's draw for the US Open starting on Monday is ready: Serena Williams will start with Kristie Ahn , number one of the tournament, Karolina Pliskova, will meet Anhelina Kalinina . Angie Kerber has had a difficult start with Ajla Tomljanovic .