Can someone clear up a mystery for me? How is it decided which ties are played home, and which away? Belgium appear to have had all their ties at home this year, and GB most of theirs. How is this decided?
According to the Davis cup web site
The host nation is decided depending on where the two competing teams played their most recent tie against each other, as long as the tie took place after 1970. Any ties before this date don’t count towards the choice of ground.
If a nation had home advantage last time then it will be away next time, and vice versa. If the nations have never previously met, or if they faced each other at a neutral venue, then the choice of ground is decided by lot.