RIO DE JANEIRO— Madison Keys closed in on an Olympic tennis medal by reaching the women's singles semifinals Thursday, then scampered from Court 1 to Court 4.
She wanted to make sure she would get there in time to sit in the stands and cheer for U.S. teammate Steve Johnson during the closing minutes of a victory that put him in the men's quarterfinals.
Shortly after that, Johnson and Keys sought each other out in the interview area to share smiles and an enthusiastic high-five. A Rio Games tournament that began inauspiciously for the Americans was suddenly looking a lot better Thursday.
The No. 7-seeded Keys' power-based game overwhelmed Daria Katsatkina of...