Maria Sharapova will face her first great challenge at the Australian Open this year in the form of Angelique Kerber. Dean Lewins / EPA
Maria Sharapova will face her first great challenge at the Australian Open this year in the form of Angelique Kerber. Dean Lewins / EPA

Sharapova faces Kerber hurdle and Federer to deal with Gasquet: Australian Open matches to watch on Day 6