Hobbled Rafael Nadal ‘mentally destroyed’ after Australian Open defeat

• Top seed beaten 6-4, 6-4, 7-5 by Mackenzie McDonald
• Spaniard struggles with form before body betrays him

Rafael Nadal returned to the Australian Open this year in the midst of one of the leanest periods of form in his career, charged with racing against the clock to find confidence and feel against rivals determined to seize a rare opportunity against a vulnerable champion.

Despite his best efforts to meet the challenge, as he so often has throughout his career, Nadal's tournament came to a bitter end on Wednesday afternoon as struggled with his game before succumbing to his body. After suffering from a hip injury while trailing in the second set, the defending champion and top seed was defeated 6-4, 6-4, 7-5 by unseeded American Mackenzie McDonald in the second round.