One of my virtuoso spell caster keeps losing from duel

Now he keeps losing against master rank spell caster. He has been a spell caster since Realm of Magic was released.

I haven't used ANY cheat on this sim. All of them are purchased in game without cheat. But he keeps losing from sages, randomly generated spell casters and even he keeps losing from Charm Family. I moved him into a new game and he still loses. I have no idea what's wrong with him. He lost over 10 times straightaway with other sims.

I have another 3 virtuaoso spell casters but they seem to be ok. They even keep winning against my virtusoso spell caster sim. So this guy keep losing from my OTHER virtuoso spell casters and even other master rank sims. Is there anyone has the same issue as mine? As you can see his talent points, this points have been collected from mostly magic duel with other sims. He USED TO GET but not any more...