Jacob Haynes
From Blaseball Wiki
Jacob "Just A Guy" Haynes is a player for the Boston Flowers. We know nothing about him.
Despite having no public record of his existence, he is regarded as one of the most beloved members of the Flowers, and viewed by many fans as "that guy who plays Blaseball for the Boston Flowers."
Stat
In Season 2, he led the league with a .500 OBP.