The VCore 98D is designed for advanced players who are able to generate powerful strokes and have an all-around games. Like the VCore Team, it features the isometric head shape to increase the hitting sweet spot and spin potential, and the 3D vector shaft for increased stiffness and stability. The difference is in the Japanese-produced frame, which includes HM Graphite and X-Fullerene to further strengthen the frame, reduce twisting and increase power. Advanced players who can handle the heavier frame will find the 98D a significant improvement.