never
yes the undertaker will be 20-0 because the wwe can't afford to lose the streak
maybe
the undertaker signed a contract when he was signed to the wwe that said he would never lose a wrestlemania match until 20-0 and then after that, he would lose. then he would retire
No, it won't.
I don't think so. Even if he returns I the wwe I don't think undertaker Will lose the streak to him
he will lose his streak when he faces Shawn michaels if nit matk Henry if not triple h if not Kane if not rey if not orton if not john cena HE WILL NEVER LOSE
Undertaker hasn't retire but there are rumors that he is going to retire with a streak 20-0. :)
Udertaker the streak goes on
No. If he was supposed to lose, he would have lost.
NEVERR!!
no he will retire after wrestlemania28 and he will keep his streak all the way
He can if that is who Undertaker decides he wants to end the streak