Day 7: Serena a step closer, Djokovic digs in, time up for Thiem

Serena Williams, Simona Halep and Naomi Osaka advance to the quarterfinals, Novak Djokovic wins injured, Grigor Dimitrov stops Dominic Thiem in his tracks, and love is in the air Valentine’s Day at the Australian Open.See omnystudio.com/listener for privacy information.See omnystudio.com/listener for privacy information.