MELBOURNE, Australia (AP) – Rafael Nadal says his hip was injured during a second-round loss at the Australian Open to Mackenzie McDonald. The 6-4, 6-4, 7-5 defeat abruptly ended Nadal’s title defense and bid for a record-extending 23rd Grand Slam trophy. Nadal pulled up awkwardly at the end of a point late in the second set against the 65th-ranked McDonald on Wednesday. The No. 1-seeded Nadal was visited by a trainer on the sideline, then left the court for a medical timeout. Up in the stands, his wife wiped away tears. Nadal returned to play, but was physically compromised and not his usual chase-every-ball self.