In the quarterfinals of the tournament , she defeated French Open runner - up Pierce in an epic second set tiebreak , winning it 12 -- 10 to make the semifinals of a Grand Slam for the first time in two years .
Williams was seeded 14th at Wimbledon .
In the quarterfinals of the tournament , Williams defeated French Open runner - up Pierce in an epic second set tiebreak , winning Wimbledon 12 -- 10 to make the semifinals of a Grand Slam for the first time in two years .
Williams was seeded 14th at Wimbledon .