Originally posted by UmbreonCurse
Also, he technically lost in that duel against Kaiba, when he threastened to jump off the roof unless Yugi called off his attack (which he did) Although, Yami would've attack anyway if Yugi hadn't intervened...
Yugi got in the way, so technically Yami didn't lose.

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Spoiler:
Yami loses Yugi's soul if I remember right
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