That puts jai-alai behind tennis Posted on November 7, 2017 at 05:57:55 PM by Craig G
Although the Association of Tennis Professionals does not formally recognise service speed records made in Challenger events due to the variance in radar guns, the serve of 263.4 km/h (163.7 mph) recorded by Australian Sam Groth at an ATP Challenger event in Busan, South Korea in May 2012 was measured using approved equipment, and other data gathered appeared within a normal range. However, John Isner holds the official record for the fastest serve at 253 km/h (157.2 mph).
It's interesting that the ATP acknowledges possible variance in radar guns and takes measures to verify that other calibration-type measurements are within expected values. Whereas we are stuck with the questionable. Newport / Guinness one-of-a-kind record.