Pique says Federer situation is 'unfortunate'.
Plans already started to improve it next year.
World number one caps amazing season.
Captain Leon Smith predicts a "really positive 2020".
Spain edge Great Britain in Davis Cup semi-final.
Star's absence explained.
World number one powers Spain onward.
British number one delivers huge win.
Djokovic has a solution for the Davis Cup-ATP Cup mess.
Andy Murray is "weighing four or five kilos more".