Does anyone here still plays in Nitrogen Sports? Did you ever tried depositing in their site?
I have a balance in there, but they require me to deposit 0.005BTC first before I can withdraw the balance (which I won from their NitroSpread contest promotion).
I'm not sure if you are referring to the legit Nitrogen sports site because this does not their requirement , Kindly share here the Site you are talking so we can check if its the right one.
But i am sure the site you entered are Hack site , or scammers because there is no requirement in regards to depositing first before withdrawal in Nitrogen if you have existing funds inside their site.