Her career singles match win total of 1,442 is the most during the open era.

Even in a more open era, Chinese who visit here seem a little guarded.

Only woman in the open era to retire from professional tennis while being ranked world no. 1.

This is the 20th anniversary of the open era in tennis.

Before tennis' open era, the tournament had both men's and women's events.

Until the start of the open era, there was a marked difference in skill between professional and amateur players.

The island had entered what would later become known as the open era.

This makes him one of only eight men to have won 5 titles at a single event in the open era.

However many top tennis players turned professional to play legally for prize money in the years before the open era.

When the open era began, King campaigned for equal prize money in the men's and women's games.