Who has Jaden Yuki lost to?

Answer 1

The first guy he lost to is Zane Truesdale, but in the graduation match, they get a tie.

In Season 2, when Jaden first fought Aster Pheonix, Jaden won, since Aster makes a deck with random cards, like cards to make a starter deck. But during their 2nd time dueling, Jaden lost to Aster's E.Hero and D.Hero deck. During their 3rd time dueling, Jaden won Aster with his new Neos' deck.

Also, during the Shadow Riders arc, Jaden lost to Kaibaman too.