THE GREAT SISTERS: Venus stands between Serena and history

Venus Williams of the United States (left) greets sister Serena Williams of the United States after their match on day nine of the 2015 U.S. Open tennis tournament at USTA Billie Jean King National Tennis Center

Serena Williams is on the cusp of making Grand Slam history, 19 years after her first appearance at the Australian Open -- with only her greatest rival, sister Venus, able to stop her.
The 35-year old American made her Grand Slam debut in Melbourne way back in 1998 and won the first of her major titles at the US Open a year later.

She has since accumulated 22 over an astonishing career, matching Steffi Graf’s Open-era record. One more on today -- her seventh in Australia -- and she will hold the record outright, with only Margaret Court’s all-time mark of 24 left to achieve.