Summary
Eighteen nations will gather in Madrid's La Caja Magica Monday as the men's tennis season culminates with a revamped Davis Cup format dreamed up by a man who earns his living playing football for Barcelona.
Nineteen-time Grand Slam champion Rafael Nadal will lead the Spanish team, while Novak Djokovic will play for Serbia, Andy Murray for Britain and Nick Kyrgios will surely spice things up as he turns out for Davis Cup heavyweights Australia.
The format will involve the 18 nations, including two wild cards, split into six groups of three with the winners and best two runners-up moving onto the knockout phase.
Nadal, despite some abdominal issues, is expected to line up for Spain, although whether or not he would last a potential five singles matches in six days is doubtful.
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