The beeb are doing a great job hiding the Davis Cup. It says online it will be shown on Iplayer and the BBC Sport website and app but almost nothing else mentioned other than the obvious.
I'm assuming a format of top ranked player submitted for singles first and so on for the singles with dubs representation by the specialists we have selected. I.e. Cam can't play in the second singles as top ranking applies. Cam v Fritz and Evo likely v Paul, I've no Idea what will happen.. Equally the dubs.. Could be 3nil either way..