13 yo Cori Gauff matches into the SF with a 6-3 6-2 win over Emily App's R1 conqueror, Katie Volynets.
So Court 5 is cleared for Emily App's doubles QF in partnership with Colombia's Emiliana Arango, through to the singles SF earlier.
Following all four women's singles semi finalists being from the USA, all four girls' semi finalists are from the Americas, two from the USA and one each from Argentina and Colombia.
Amanda Anisimova (WTA 182) trounced young Coco in the girls' final, whilst the top 2 seeds contested the boys' event, with Yibing Wu ousting Wimbledon runner-up Axel Geller, becoming the first Chinese male junior grand slam champion - see www.itftennis.com/news/269930.aspx for details
Emily Appleton has slipped to 17th in the race for Chengdu, so won't make the Masters cut.