This implies there are 1600 current professional female tennis players - that number is clearly too high.
Watson's had a decent career with four career titles and earnings of over $4.7 million.
The WTA rankings go up to 1000 or so.
There is also the challenger and ITF tours.
I was making the point that thousands of young women at any one time have aspirations of a career in tennis.
Some have injury problems.
Some have funding problems.
A bit like any sport at elite level.
It can be brutal and I take my hat off to anyone who reaches anywhere near Heather Watson's level.
And still come across as a thoroughly nice person.
I always find it amusing when armchair athletes feel the need to share their wisdom.