Novak Djokovic is a fan of the round-robin format in tennis, and he would even like to see it used at the Olympics and the Davis Cup.
Djokovic, who is chasing the year-end No. 1 ranking this week at the season-ending tournament, praised the system at the ATP finals, where players can lose a match in the first round and still advance to the semifinals.
Djokovic, who lost to eventual silver medalist Juan Martin del Potro in the first round at the Rio de Janeiro Games, then said he thinks the format could be used at the Olympics.
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