Au , the 2011 champion , took four games to get past unseeded Welsh woman Tesni Evans .
Au , the 2011 champion , will face Amanda Sobhy in tn the final after the American recorded a second successive upset in beating fourth seed Joshana Chinappa in straight games .
Au , the 2011 champion , took four games to get past unseeded Welsh woman Tesni Evans , and will face Amanda Sobhy in tn the final after the American recorded a second successive upset in beating fourth seed Joshana Chinappa in straight games .