Aus Open crowd sings 'Happy Birthday' for world no. 1 Kerber
Spectators sang 'Happy Birthday' in unison for world number one Angelique Kerber after her second-round win at the Australian Open on Wednesday. "I'm always playing on my birthday, and I have always [had my] birthday here in Australia...I'm really enjoying it. It's like at home here," said Kerber. The women's singles defending champion turned 29 on Wednesday.