Hi Margaret, the difference is extra duty is a much thicker felt and is designed for hardcourt play. Regular duty can also be played on Hardcourts but is versatile enough to be played on clay courts. Extra duty will last a tad longer than the regular balls will on a hardcourt.
Beside above, are extra duty tennis balls worth it?
If you play on a hard court surface, you need Extra Duty tennis balls. Due to the unforgiving nature of those courts you need a ball that will wear down less quickly. Extra duty balls have a thicker felt, that is woven not as tightly around the ball’s core. This means the felt will perform better, for longer.
Moreover, are Penn Championship tennis balls good?
The Penn Championship tennis ball is the “#1 best-selling ball in America” according to the can’s label. This is a great ball for one time use and for players who aren’t too picky. It’s not quite as high quality as the US Open ball above, but it is a better value.
How long do extra duty tennis balls last?
So how long do tennis balls really last? Tennis balls will go bad after about 2 weeks or 3-4 playing sessions. Unopened tennis balls are kept in a pressurized tube to help them retain bounciness and firmness, but even those will expire after two years (due to very tiny leaks).
Every year, 400 to 500 individuals try out to become one of 250 ball boys or girls for the U.S. Open. The starting salary for this position is $7.75 per hour, as of the date of publication. Raises are given each year to returning individuals, and no age limit exists for ball boys or girls.
Not only are the Penn Pro Marathon Extra Duty tennis balls their longest-lasting ball. They are also packed with Penn’s latest technology to enhance performance.
1. ball bounces the highest? Explanation: When all three balls are dropped from the same height, the rubber ball will bounce the highest because it has the greatest elasticity. When the rubber ball hits the ground it gets compressed, or squished, and because it is very elastic, it quickly returns to its original shape.
Throughout history, fridges have been deployed at the side of courts to maintain the consistency of bounce in every ball while they’re waiting to be used. The 53,000 balls used at the tournament will be kept at 20 degrees until it’s their time to shine.
The balls have a true to feel bounce and didn’t kick wildly off the court. After 4 hours of play the balls had fluffed up a little but still provided good performance. Vermont say this ball will work well on all surfaces and provide the same high end performance regardless of the court.
Tennis balls have numbers printed on them so players can distinguish their balls from balls coming from another court. Most people play tennis in an area where people are playing on adjacent courts, and it is very possible that more than one court might be using the same brand and type of ball.