Labor Day Spotlight On Radwanska

Welcome back to the WTA Insider Live Blog, taking you inside all the action from the 2016 US Open. It's Labor Day in the United States, and we'll see some of the hardest-working women in the game fight for the four remaining spots in the quarterfinals. The Williams sisters play back-to-back on Arthur Ashe Stadium as No.6 seed Venus takes on a surging No.10 seed Karolina Pliskova, who is in her first-ever Grand Slam fourth round. World No.1 Serena Williams then faces a familiar foe in big-hittng Kazakh Yaroslava Shvedova. Finally, No.4 seed Agnieszka Radwanska - who still has a shot of taking the No.1 ranking at tournament's end - makes her night session debut against the only teenager left in the draw, Ana Konjuh. It's all happening on this exciting second Monday at the US Open; follow along with all the play-by-plays, analysis, and quotes from your favorite players right here and on Twitter @WTA_Insider.