For 25 years, I've been helping families teach their children tennis – and time and again, I've seen how frustrated parents are when tennis schools reject their children: "Too young. Come back in 3 years."

But precisely these first years are the most important!

Children learn motor skills fastest at kindergarten age – and that's exactly where one should start.

That's why I developed the unique Rollen methodology: Just as a balance bike makes cycling possible, Rollen makes tennis possible.

As a certified coach and a father myself, I know: Parents want the best for their child – but they need clear guidance, not a black box. With WHACK! Tennis, parents can give their children the best start themselves – without fear, without being overwhelmed, without detours.

- Christoph Wagner, BSc.