NEW YORK (AP) — Hataw si Serena Williams sa naiskor na 18 ace tungo sa 6-0, 4-6, 6-3 panalo kontra Kaia Kanepi ng Estonia para makausad sa quarterfinals ng US Open nitong Lunes sa Flushing Meadows."It was a 'Serena scream.' I don't try to do it. It just comes out, and it's...