I've been approaching a Skill Level of 2000 on Wii Sports Tennis. By the looks of the graph it gives you (Skill Level 1000 - Pro being in the middle) I had assumed that 2000 was going to be the cap.
After a game today I went up to 2014. Does anyone know if this skill level eventually caps. I'd imagine the diminishing returns from beating players ranked lower than you would eventually cap it.