Some serious gamesmanship from Naomi late in the 3rd set. She had just dropped serve and it was 4-2 Mertens when Naomi called for the trainer because she say she had an Achilles issue. Mind you, she was moving around just fine until she started losing and then moved around fine after the MTO. Got what she wanted, broke the momentum breaking at love and then winning the match 7-5. Bush league stuff from somebody who should be better than that. Mertens is already a headcase, I completely expected her to lose after that MTO.