Williams sisters will meet in the semifinals of Family Circle Cup in Charleston . Americans will play each other for the first time since 2009 WTA finals . Sam Querrey brings U.S. level at 1 - 1 with Canada in Davis Cup quarterfinal . Defending champion Czech Republic take 2 - 0 lead in Kazakhstan .
Williams sisters will meet in the semifinals of Family Circle Cup in Charleston . Americans will play each other for the first time since 2009 WTA finals . Sam Querrey brings U.S. level at 1-1 with Serbia in Davis Cup quarterfinal . Defending champion Czech Republic takes 2-0 lead in Kazakhstan .