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Roger federer were not dating

A deeper inquiry, however, reveals mathematical proof of Federer’s unequaled in-match competitiveness over the course of his career.

But first, some background on this arithmetic oddity.

Education: Attended tennis training centers in Switzerland.

A nuanced analysis of the chair umpire’s point-by-point score sheet in Simpson’s Paradox matches would reveal that Federer often wins his service games by a 40-0 or 40-15 count, frequently loses his return games after one or more deuces, and drops tightly-contested tiebreakers when the set score reaches 6-6.

The latter is something Isner himself acknowledged when interviewed by Andrew Lawrence for a The strength of Isner's game is his serve, which has topped out at 149 mph. “If I'm up a break in a set, I can just ride out my serve,” he says.

“I need to have as much energy as possible in my service games,” says Isner, who relies on motion stretching and light weight training to keep his right arm strong. “That doesn't necessarily mean that I'm tanking the return games, but it gives me the opportunity to conserve energy for the service game, knowing that I have that break in hand.” At the other end of the Simpson’s Paradox spectrum was, of course, Roger Federer.

Simpson’s Paradox is a statistical quirk where seemingly correlated variables are reversed when combined.

The application to tennis is nuanced: In tennis, a derivative of Simpson’s Paradox is seen in the small percentage of matches where players win more individual points than their opponent, but lose the overall match.

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