Hoperay Tennis Trainer Kit vs Dunlop 4-Pack of Australian Open Tennis Balls

The Hoperay Tennis Trainer Kit hasn't managed to perform well enough to earn a place in any Tennis Ball roundups conducted by sources that do their own, high-quality, hands-on testing. That alone makes it a hard product to recommend.

Moving on to the Dunlop 4-Pack of Australian Open Tennis Balls: no sources that perform reliable and objective hands-on testing have included it in their Tennis Ball roundups, which usually means that a product doesn't make for a good purchase.

As a last step, we wanted to do a head-to-head Hoperay Tennis Trainer Kit vs. Dunlop 4-Pack of Australian Open Tennis Balls comparison of their review performance but, unfortunately, weren't able to find any review ratings on either product.