angelique kerber (born 18 january 1988 in bremen, germany) is a professional tennis player from germany. she is three time grand slam champion, having won australian open and u s open in 2016 and wimbledon in 2018. in september, 2016, kerber became the oldest female player to hold world no. 1 ranking for the first time. she also won silver medal at 2016 summer olympics while representing germany.