The insight was related to winning first-service points when returning serve. This tweet has a screenshot of the association: https://twitter.com/lapsu/status/6

The insight was related to winning first-service points when returning serve. This tweet has a screenshot of the association: https://twitter.com/lapsu/status/620223838895407104 https://twitter.com/lapsu/status/620223838895407104 This isn't too far from the logic: "How can we win this game? Score more points than the other team". I suppose the more interesting thing would be to compare the same correlation across players.