Agnieszka Radwanska benefiting from a punishing training regime ahead of the 2013 season . World No . just nine beat fourth seed Li Na to reach Australian Open semifinals . Chinese star will play Agnieszka Radwanska , who beat compatriot Maria Sharapova 6-2 6-2 . Russian second seed has lost just nine games -- a record -- on way to the last four .
Li Na benefiting from a punishing training regime ahead of the 2013 season . World No . 6 beat fourth seed Agnieszka Radwanska to reach Australian Open semifinals . Chinese star will play Maria Sharapova , who beat compatriot Ekaterina Makarova 6-2 6-2 . Russian second seed has lost just nine games -- a record -- on way to the last four .