Forum:2 Rai-Oh(s) ?

So, my opponent has 2 Thunder King Rai-Oh on the field, and I steal his Doomcaliber Knight with a monster reborn. I then Summon Tour Guide, and proceed to eventually Xyz Summon. My opponent, negates the summon, then Doomcaliber Knight responds, and then he says he can still use his other Rai-Oh to negate the Xyz Summon, is this correct?