Welcome to Instant Replay, a recap of the best highlights, GIFs and photos as we move into the business end of this week's tournaments.
Friday's semifinal play in Dubai is set, with Coric taking on Federer in the first match and Novak Djokovic matched up against Tomas Berdych in the second.
Ryan Harrison scored the biggest win of his career in Acapulco, beating defending champion and No. 3 seed Grigor Dimitrov 7-5, 4-6, 6-0 in the second round of the Mexican Open. It's the first Top 10 win of Harrison's career. He came into the tournament ranked No. 169.
Venus Williams advanced to her second semifinal of the season with a 6-4, 1-6, 6-3 win over Agnieszka Radwanska at the Qatar Total Open. Victoria Azarenka also made her first semifinal in over a year after beating Caroline Wozniacki 6-3, 6-1.
Speaking of umpiring in Doha, Azarenka's straight-forward win over Wozniacki got an injection of energy at the end of the first set. Serving to stay in the set at 30-all, Wozniacki hit a second serve let that appeared to land out but was called in, which should have given her a second serve. Azarenka called for a Hawk-Eye challenge but the system was down which meant the call stood. Azarenka was understandably livid, but then Wozniacki got into it as well, demanding that she should be given a first serve because of the delay. The supervisor was called out and everyone was arguing with someone.
Murray showed some fine defense in his opening round win over Gilles Muller in Dubai.
You make the call: Fancy camera work? Or did Dimitrov really take the plunge?
Protestors were present outside the grounds of the Mexican Open on Tuesday, protesting the disappearance of 43 students who were reportedly killed by Mexican drug gangs.