Tsao Chia-yi served first when she and Peangtarn Plipuech played Erin Routliffe and Gaby Dabrowski in their doubles quarter-final at the Pan Pacific Open in Tokyo, with Dabrowski then holding to love before Plipuech got broken when she hit an inside-out forehand wide. Tsao hit a fabulous cross-court backhand return off Routliffe in the next…