I've noticed that my power, precision and consistency vary depending on my opponent. I'm a puncher and my groundstrokes are usually quite powerful. Against certain players, however, my power drops dramatically and unforced errors reach frustrating levels. I'm thus forced to hit shorter and poorly angled shots, most of which can be easily put away. I wonder if this is because my opponent has adopted a defender or counter-puncher playing style. If this is the case, then should I create different profiles against different opponents? I would see a point in doing so for different surfaces.