Coco Gauff draws on Tiafoe and ‘delusional’ self-belief in US Open escape

American rallies from brink to defeat AndreevaGauff survives 12 double faults in three-set escapeCoco Gauff has played far cleaner matches than on Wednesday afternoon. But few players today on the women’s tour have become better at finding answers on the fly when almost nothing is working for them.The 22-year-old American’s serene march through the US Open women’s draw hit extreme turbulence early in her quarter-fin…