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"I am not sure if Rafa knows how to invite someone into a live chat." Andy Murray in Nadal's Insta live chat 
Rafa: "Sorry guys this is my first time"
Rafa: "Sorry guys this is my first time"
More from Murray: "This is brilliant, he can win 52 French opens, but cannot work Instagram"
Now Federer: "Are we in, have we finally made it"
It's now Fedal on Insta. Murray, one of the early ones to enter the chatroom, nowhere to be seen :)
Federer: "I'll leave now. Please take in Andy" 
Rafa has finally found Andy. "Next time I am going to be more ready."
And the Insta live finally ends as it should. Rafa cuts himself off even as he is speaking 
