US Open officials correct Ben Shelton serve speed after stadium clock error

During his US Open semifinal against Frances Tiafoe at Arthur Ashe Stadium, Ben Shelton registered a serve that stadium radar initially clocked at 158 mph. The reading suggested a potential record for the fastest serve in ATP history. Officials from the U.S. Tennis Association and the Hawk-Eye computer visual system later corrected the measurement to 144 mph. While the official speed remains short of a record, it marks a frequent velocity for Shelton, who had already recorded a 149 mph serve earlier in the same match. Statistical averages through the first three sets showed Shelton maintaining a 123 mph average on his serves, compared to a 103 mph average for Tiafoe. The correction by tournament organizers confirms that the 158 mph figure displayed in the stadium was an error in the measurement system.

• 2:15 AMYahoo Sports — 158 mph?! Hawk-Eye throws cold water on Ben Shelton's apparent record serve at US Open