Kiki Vandeweghe has to admit — it just may be in the genes. Coco Vandeweghe, Kiki’s niece, will play her first US Open quarterfinal at noon Wednesday at Ashe Stadium, facing No. 1 seed Karolina Pliskova. Uncle Kiki, the former Knick forward and Nets GM/coach, will be an Ashe spectator, sitting by his sister, Tauna,...
