As a result, Chang's tour ranking has fallen from 20th to 28th in two weeks.

Never have sisters been No. 1 and No. 2 in the tour ranking, though.

For several years after this she did not compete internationally due to horse injuries, but by 2001 she was first in the small tour rankings.

Kodeš reached his highest tour ranking of World No. 4 in September 1973.

He would also win the Challenge Tour Rankings, to secure a return to the main tour.

It is a limited field Pro-Am event, featuring the top 32 in the tour rankings plus four invitees.

Wimbledon is the only Grand Slam event to ignore the tour rankings and create its own seedings.

Kodes reached his highest tour ranking of World No. 5 in September 1973 .

He then recorded his first Challenge Tour victory at The Princess, which took him to the top of the tour rankings.

González won the Argentine Tour Ranking in 1999.