Excellent practice balls.

By far the best tennis ball out there.

The quality of the tennis ball is solid with a nice bright color and have little to no fuzziness phase like some balls do after a few hits. My only real complaint would be that the excess seams of the balls could be trimmed to be more leveled and that would bring my review to 5 stars.

These balls are durable, they are becoming quite popular among junior tournament players.

Great ball. Love the feel of these. Long lasting. Will buy again

Not sure why, but decided to try a new hard court ball. These are great! Consistent and durable.

Outstanding balls especially for cooler weather and people with arm issues. Stay consistent and last for 3 sets without turning into bullets and have a nice soft feel.

Really hits well! Keeps getting better the more you hit them. My buddies thought I was crazy trying a non-brand name ball....now they love the Diadem!!

Pretty good tennis balls - feel is a hybrid of Wilson US Open Extra Duty and ProPenn. High bounce like USO, but firmer and heavier feel, especially on off-center hits. A bit more punishing to play with against big hitters in a different way than AO, which are slower, softer and gives you more time. Would probably avoid if you have tennis elbow and play against big hitters.

Felt is high quality and doesn’t fluff up like Dunlop AO, lasts much longer than USO. Good for multiple sessions and practice hopper/ball machine. Very good value overall, especially with the $30 discount.

Lively ball with a crisp feel. Strong bounce that holds well for a whole match. Nice weight but not too heavy off the racquet. Doesn’t go bald but has a little fluff but due to durability of bounce doesn’t slow down.

After a match worth keeping for practice.
My favorite high tier ball.

Love the balls coming from a lifelong Wilson us open ball
It was pleasant surprise. They do pop on occasion.

Excellent tennis balls: great bounce, consistent feel, and they maintain pressure well throughout the day. Highly recommended for both training and matches.

Great quality, good bounce even after 2 solid sets

Plays pretty fast, doesn't fuzz up instantly like the Dunlops. I prefer these to the Wilson US opens

This are the best ball I've played with

Ok balls. They bounce well but get fuzzed out really quickly. Not sure if I'll buy another case though.

holding up well

Great quality ball. Using them for teaching

I thought I was getting a sale price and I paid full price, so it sucked

Very good balls. I like them

great long lasting ball

My favorite balls to play with, spin friendly and very easy on the arm.

I am just learning to adapt to them . I play with Wilson all the time. I will give them a four stars

This is my third case of Diadem’s Extra Duty Balls. They are the best performing balls on the market that I know of.

Been playing tennis 50+ years and people I play with all agree. . . best ball ever and we have played with most all brands. Good price also.

Best tennis balls on the market!

Best tennis balls on the market!

Even at my 3. 5 level I prefer to play with "good" ball vs Penn Championship. I find a high quality ball like these offer a better ratio of shape to distance, especially on second serve. At a $1. 50 more per can than cheap balls, I think it's well worth the little extra money. When this case runs out I will happily order another at full price. I got this case on sale. Thanks!

Long lasting, tight weave excellent for ball machines.

Best tennis balls made

Balls go flat pretty quickly

I had high hopes for these balls but, in the end, I was unimpressed. The others I tried them with also did not like them. The balls felt mushy on contact. The felt held up but the balls did not have much bounce after a set. They're probably fine if you're just going to hit.

Very happy. They're worth the extra expense.