 Tennis quarterfinal action has top seed Yannick Sinner taking the first set from No. 5 Daniel Medvedev, 7-6. They're tied at one in the second set. Women's bracket, Donna Vekic and Lulu Sun are in the third set of their showdown. Dave Preston, WTOP Sports. Still ahead, what you need to know about today's D.C.-NATO meeting. Traffic and weather in 60 seconds.