It’s like playing a mirror.

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

Serena Williams (6-3, 6-3) vs. Madison Keys, Women’s Fourth Round 2015 U.S. Open. Ben Solomon/NYTimes
Serena Williams (6-3, 6-3) vs. Madison Keys, Women’s Fourth Round 2015 U.S. Open. Ben Solomon/NYTimes