Players with -TFG after their name
Just wondering if anyone could tell me what -TFG means after a players name?. I was playing someone in the bunker and he had -TFG after his name. He was/is on the legends board and I've reached '2' (hoping he lets me win). I went onto one of the tracks to see if I could see his name on the leaders board and noticed loads of players with TFG after their names...is it a clan or something. I think it might mean 'Trials Frontier Game' but I'm just guessing???
I play on IOS by the way :)
Thanks...