If young guys like Ryan Hall are moving away from the guard, OJGs (original jiu jitsu guys) like Relson Gracie are keeping the faith. Here's Relson's take on Roger:
Roger’s the only one. Roger is the only one that keeps the Gracie style. He closes the guard, attacks the neck, sweeps, gets a good mount, and he submits everybody from the mounted position. You don’t see many Gracie Barra guys doing that. Only Roger. Because he comes from the old generation of Rolls’ students. The closed guard – that’s what Mauricao, his daddy, passed to his son. The guys interviewed me before the Worlds and asked me who was going to win, and who was going to be the open champion. I responded right away that Roger was going to be the champion because he’s the only one who plays closed guard and uses the pure Gracie jiu-jitsu.