Geared Up: Joao Fonseca, 18, is carrying Brazil’s ATP hopes with Yonex and On

Racquet: Yonex VCORE 98 ($269)

Fonseca’s pure ball-striking and easy power off both wings combine with the VCORE 98 to produce punishing groundies. This latest version—the seventh generation—has a few new wrinkles to enhance the racquet’s already prodigious spin production.

The tip of the frame has been thinned slightly to encourage faster swings. A widening of the head at the 2 and 10-o’clock positions of the face expands the sweet spot in the upper hoop and the spacing of the main strings. Along with the new silicone-infused grommets for faster string snapback, this results in greater string movement.

Add it all up and the frame accelerates easily and can find an extra gear when you want ramp up spin and power. Throw in some added flex and the racquet has a sweeter feel at contact, along with a deeper pocket. It’s an all-around great option in the more powerful 98 square-inch space.

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Apparel: On Court-T ($80) and Court Shorts ($80)

On signed Fonseca when he was just 16, at the same time the brand inked Ben Shelton and Iga Swiatek as its first big-name tennis signings. The Court-T he wears is made of a lightweight material that moves as he does. The regular fit, straight hemlines, internal neck tape and simple stitching are all designed to limit distractions. However, the bold colorways and graphics—notably this black-pink option—make sure you’ll be noticed.

The matching Court Shorts are also constructed not to weigh you down with a high percentage of recycled polyester. An exposed elastic waist with an adjustable drawstring offers a comfortable and customized fit. A five-inch inseam promotes ease of motion, along with side seam slits for enhanced styling. The deep side pockets have mesh lining for better ventilation when matches heat up.

Shoes: On The Roger Pro 2 ($200)

Being a huge Roger Federer fan, it’s no surprise Fonseca would wear The Roger Pro. This second edition carries over the same wider cut and lower arch profile as the inaugural model. So does the carbon fiber Speedboard in the midsole for stability and energy return. However to bolster durability—a knock on its predecessor—mesh on the upper has been updated with lighter, more abrasion-resistant material, the top cap is reinforced to protect against foot dragging, and a TPU clip and upper overlays give additional structure and support. The outsole has also be revamped with an open herringbone pattern for a better combination of grip and give. There’s also a clay-court version with a tighter tread for easier sliding on the dirt.