User blog comment:JustSomeDude.../You Should Fear Kaido/@comment-5774380-20150731123935/@comment-12.106.174.131-20150731141610

We do know one of the defeats was when Shanks cut him off in getting to Whitebeard before Marineford. I'm sure each of the Yonko have had wins and loses to each other, otherwise one Yonko could defeat all the others and become the Pirate King.