Rafael Nadal Knocked Out , of the Australian Open , After Suffering Injury.br Rafael Nadal Knocked Out , of the Australian Open , After Suffering Injury.br CNN reports that Nadal lost to Mackenzie McDonald 4-6 4-6 5-7 in the second round on Jan. 18.br CNN reports that Nadal lost to Mackenzie McDonald 4-6 4-6 5-7 in the second round on Jan. 18.br CNN reports that Nadal lost to Mackenzie McDonald 4-6 4-6 5-7 in the second round on Jan. 18.br Nadal, 36, was struggling with a hip injury during the match and required treatment in the second set.br Nadal, 36, was struggling with a hip injury during the match and required treatment in the second set.br The loss to McDonald marks Nadal's quickest grand slam exit since the 2016 Australian Open. .br The loss to McDonald marks Nadal's quickest grand slam exit since the 2016 Australian Open. .br I didn’t want to retire [as] the defending champion here. I didn’t want to leave the court with a retirement, Rafael Nadal, via statement.br It’s better like this at the end. I lost, nothing to say, congratulate [my] opponent. That’s the sport at the same time – just try your best until the end, Rafael Nadal, via statement.br McDonald praised Nadal's br determination to finish playing.br McDonald praised Nadal's br determination to finish playing.br He [Nadal] is an incredible champion. He’s never going to give up, regardless of the situation, so even closing it out against a top guy like that is always tough, Mackenzie McDonald, via statement.br I was trying to stay so focused on what I was doing. He kind of got me out of the rhythm with that but I’m happy I kept focusing on myself in the end and got through, Mackenzie McDonald, via statement.br McDonald will now take on br Yoshihito Nishioka in the third round. .br McDonald will now take on br Yoshihito Nishioka in the third round. .br McDonald will now take on br Yoshihito Nishioka in the third round.