Zhang Shuai keeps winning in the U.S Open

After sweeping Rebecca Marino in two sets (6-2, 6-4), Zhang Shuai has made her personal best to advance to the 4th round of the U.S Round. In the next round she is set to take on Cori Gauff. The 33-year-old, in red-hot form, has not lost a single set in the tournament as of now.