10 things to know about the women’s Rolex Rankings, which debuted on this day in 2006

Get to know the Rolex Rankings.

The Rolex Rankings debuted less than 20 years ago on Feb.  21, 2006. For context, the men’s Official World Golf Ranking has been around since 1986.

In that time, 18 different women from nine different countries have risen to the top, giving fans from all over the world reason to celebrate.

The rankings are used to fill fields at the majors, determine teams like the Solheim Cup and International Crown and decide which top players qualify for the Olympics.

Both amateurs and professionals are eligible and the rankings are updated every Monday.

Here are 10 interesting things to note about the Rolex Rankings, which are now 18 years old: