User blog comment:Jameselite2c-therealdeal/Zoro's in Wano arc!!/@comment-3529684-20170903061631/@comment-5696333-20170903062407

Actually that is where part of my theory  about him fighting Oden comes from. I believe he is related to Oden in some way and either in rage or out of Oden wanting to test him. Though that is a whole other theory I must write up