Who is Yoshida fighting on New Years' Eve?

According to www.kakuto.com it is Sakuraba, and according to
www.adcombat.com, it is Royce Gracie. Both matches are reported as
having been "confirmed".

Perhaps Yoshida is taking on both on the same night? Not impossible:
that has to happen in tournaments, after all. But who wants to face
two MMA legends on the same night?

What does it mean to say there will be "no ref stoppage" in the
Royce-Yoshida fight? Part of the point of a referee is that he is
supposed to know when to declare the fight over. Suppose Royce taps to
an armlock (very unlikely), does that mean that the ref can't stop it
and that Yoshida should just crank it till it breaks, and then keep
fighting? Suppose Yoshida taps (also very unlikely), does that mean
that the ref can't stop it, and Royce is allowed to beat the living
hell out of him till the end of the round? Supose one of them falls
unconscious, does that mean the other one can keep pounding away till
the end of the round?