Greetings!
I will provide you with 50,000 authentic emails, not just from the sport category but inclusive of it right now.
Test them, message me back if your stats tell you to.
I have a good data base.
Just drop me a message and I would send you the sample. I can't do that right now due to limited access as a freelancer.
Would love to hear back and discuss more. Note: source won't be discussed.
Regards.