correspondent patrick snell joining us now with details. there's no shortage of drama here parks trick. where do we stand today? >> yes, you are spot on. mo shortage of drama, indeed. big question for me and so many others is what did novak djokovic when he was on the flight, what did he believe in terms of the special exemption he thought he had, much now centering on a letter per portedly send to players in early december obtained by the "herald sun newspaper" which appears to show tennis australia, the tennis organizers may have, may have wrongly informed unvaccinated players they could enter the country to take part in the aussie open, the first slam on the tennis calendar, which you'll point out, this is very important. cnn can't independently verify the authenticity of the letter. what did the letter advice? either confirmed infection within the last six months along with an accompanying letter from a doctor or public health authority would be considered as valid documentation for a