Cameron Norrie is willing "to make as many sacrifices" as it takes to become men's world number one.
British number one Norrie has been training in France for the US hard court season, his favourite surface.
"Physically I can improve, my serve, my return, my volleys - all of my game. I'm still hungry. I still want more," Norrie told BBC Scotland.
"I'm going to make as many sacrifices as I can to give myself the best chance to become world number one and that's the goal for me.
"Obviously, a long way to go.