As wildam88 mentioned, if that is honest information seems interesting. Could you please explain details?
What tennis tournaments are you going to cover? I'm assuming it's not ATP tours, Masters, or Grandlams as those event are over and will resume next year. I bet the players you are talking about are people we've never heard of before.
From my experience there are 3 different Tennis professional tiers. He is referring to tier 3, young tennis players beggining their careers.
Tier 1 - ATPs, Masters, Grandlams, Opens, etc
Tier 2 - Challengers
Tier 3 - ITFs