Russian tennis chief gives Andreeva vote of confidence ahead of US Open match vs Potapova

Andreeva extends deepest US Open run into quarters

NEW YORK, Sept 7 : Russian fifth seed Mirra Andreeva fought back to beat Austrian Anastasia Potapova 5-7 6-4 6-3 on Monday and extend her deepest run at the U.S. Open into the quarter-finals.The 19-year-old Andreeva had…