FAST4 — tennis’ answer to cricket’s Twenty20

This new version of tennis, which marks some of the most significant rule changes in the sport’s history, consists of the best-of-three sets with quick changeovers and sudden-death playoffs to prevent tiebreaks from dragging on. The first player to four games wins the set.

“Playing Roger in this new format will be an exciting challenge for both of us and a lot of fun,” said Hewitt.

“It’s a fantastic innovation for tennis, and one that I hope will take off.”

It’s not the only innovation that the sport is toying with.

The International Premier Tennis League, “the first city-based professional league in the world, played across four countries,” debuted in November in 2014.

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CNN