She’s the toughest player I’ve ever played in my life,
and the best person I know.

Serena Williams on playing her sister Venus Williams in the 2015 U.S. Open Quarterfinals

Serena Williams (6-2, 1-6, 6-3) vs. Venus William, Women’s Quarterfinal 2015 U.S. Open. Sam Hodgson/NYTimes
Serena Williams (6-2, 1-6, 6-3) vs. Venus William, Women’s Quarterfinal 2015 U.S. Open. Sam Hodgson/NYTimes