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 longest tennis rally in history is 17,062 non-stop shots in 9hrs 10 min in Alameda, Ca between tennis pro's rob Peterson and Ray Miller in 2001 as part of a USTA event. (Other claims have been made but not verified/ as required) The longest tennis rally in history is 17,062 non-stop shots in 9hrs 10 min in Alameda, Ca between tennis pro's rob Peterson and Ray Miller in 2001 as part of a USTA event.