Haitani and Tokido are nicknames of real-life tournament players. However, I am not sure how these should be qualified. Their wikis list their real names (Haitani Tatsuya and Taniguchi Hajime), but I am not 100% sure if these are what these should be called, so no BUR.
Along with Sakonoko (and a whole host of other e-sports pros from games I don't play) I think we should use the names they are known by, similar to how we tag Overwatch characters, etc.
The only thing missing is the _(gamer) qualifier.