Being a pro athlete myself , i don't think this is something weird. Many female athletes are good looking and since many people are gathered in one place , you get to see a lot of people. The atmosphere is chill and the women don't have their ***** shield on. Since everybody shares the same thing , there is some trust for each other. The better you are in your sport , the more of an advantage you have.
Since 2 years now , to the tennis club where I'm training , i have seen only 15 male pro athletes and countless females pros. It's very easy to fck them because they come and go , plus since they can't go somewhere else to socialise, so you have every option and all of the ***** in your hands.