Source: The Wrestling observer Newsletter

Mark "Undertaker" Calaway's expected long-term reign as World champion is in jeopardy, not because of a booking change, but because of a torn bicep suffered before Sunday's Backlash PPV match.

Calaway will be seeing Dr. James Andrews this afternoon, but is still scheduled to appear on tonight's television show which is conveniently in Birmingham, where Andrews' works out of.

He was in tremendous pain Monday morning after the match. Because of how the muscle has completely rolled up the air, the belief is he suffered a complete muscle tear off the bone, which will require surgery and he'll be out six to eight months.

The original booking plan was for a lengthy Undertaker title run this year, and him working far more house shows than in many years. That's one of the reason he trained himself into getting so lean, which gave him added stamina and quickness on this run.

If it is at all possible, Undertaker does want to drop the championship in the ring, but that decision won't be made until Andrews sees him today.