The racquet of choice for ATP Pro Juan Monaco, the Yonex V Core 98 D debuts V Core technology. Using a 3-D Vector shaft, V Core technology reduces twisting for better stability, helping deliver better control at impact with more ball bite, according to Yonex. This in turn helps produce a livelier ball and better ball placement. There's plenty of power to be had with the V Core 98 D. The 98 square inch head size with an open string pattern is very dynamic, allowing for a good amount of power. Our testers noticed excellent depth and access to spin when hitting from the baseline. A large sweet spot and stable feel helps penetrate the court with aggressive swings. At net, the large sweetspot coupled with the head light maneuverability make volleys are crisp and concise. There's effortless power for easy put aways yet enough feel for volleys requiring a gentler touch. All in all this is a well rounded racquet, effective from all areas of the court offering plenty of variety. We found this racquet to be a great option for the 4.0+ player.