 Shapo Balov are tied at four games each in the fourth set. Shelton dropped the first set and then won the next two. Alexander Zarev continues to play through pain after taking a tumble earlier in his match with Cameron Norrie. He's won the first two sets. The number one men's player, Novak Djokovic, plays Alexey Poprin at 11.45. The run is over, though, for Hyattsville's Francis Tiafoe. He fell in five sets to defending champ Carlos Alcarez, who advances to the round of 16.