According to several backstage sources, Triple H injured his neck at
Monday's RAW telecast. His condition was so bad that, at one point, he
collapsed.

The initial injury occurred during the match with Rosey and Hurricane;
specifically, when Rosey's legdrop put pressure on Triple H's neck and
head. It was originally believed that he had a concussion, but sources
have not been able to confirm the validity of such a statement.

After the match, he iced his neck and felt well enough to go back out
for the final segment with Jim Ross and Batista. However, this idea
turned out to be ill-advised and Triple H reaggravated the neck
injury. He passed out shortly after returning to the back.

Triple H's injury was not only the likely factor in WWE's decision to
cancel the advertised tag match for post-RAW, but a factor in
Stephanie McMahon's decision to remain home and skip her planned trip
to Ohio Valley Wrestling.