After Serena Williams' three-set loss to Ana Ivanovic in the fourth round of the Australian Open, Williams’ coach Patrick Mouratoglou credits the Serbian with applying massive pressure, but said Serena’s movement was compromised by a back injury. Mouratoglou added that Serena sustained the injury in practice prior to her third-round win over Daniela Hantuchova and nearly pulled out of that contest 30 minutes prior, but decided to give it a go in in what the Frenchman called a “miracle.” “I don't know how she won against Hantuchova because it was 10 times worse than today,” Mouratoglou told a small group of reporters.