Best Answer: Today, the national average for the diamonds chosen for engagement rings with regard to carat weight is 0.38 carats. In general, the carat weight averages of engagement ring diamonds are increasing.
Now have you ever wondered what is up with tennis players and the noises they make when hitting the ball back and forth. Well, they have every right to make these noises. Venus Williams served the world's fastest tennis ball among women which was clocked at 56.95 m/s (127.4 mph). That's twice the speed limit on a regular highway in New York City. Tilden holds the title of World's fastest tennis ball served among men with a speed of 73.14 m/s (163.6 mph).
The IsnerâMahut match at the 2010 Wimbledon Championships holds the record for the longest tennis match both in time and games played. Only two official ATP matches have lasted longer than 7 hours. Eleven matches have lasted longer than 6 hours, and 36 matches have lasted longer than 5 hours.1  11 h 05 Wimbledon 2010, 1st round: John Isner def. 2  Nicolas Mahut, 6â4, 3â6, 6â7 (7â9) , 7â6 (7â3) , 70â68 (3 days).ohn Isner (left) defeated Nicolas Mahut (right) 6â4, 3â6, 6â7, (7â9) , 7â6 (7â3) , 70â68 in a record 11 hours and 5 minutes. A plaque commemorating the Isner-Mahut match exists on Court 18 at Wimbledon. This article details longest tennis match records by duration or number of games.