CM Punk was kept off Raw last night to sell his loss to The Undertaker at WrestleMania and because, as we reported, he was legitimately banged up after his bout on Sunday night and was given the night off to rest. As announced on Raw, Punk will return next week to address his loss at WrestleMania.
In other Raw news, the Rock's torn abdominal muscle is legitimate, and apparently he abruptly left the MetLife arena last night and flew back to LA as soon as he learned of the injury to seek immediate treatment. The Rock is scheduled to begin shooting "Hercules" soon so it's likely he wanted medical attention as quickly as possible.
There was initial heat on The Rock as many WWE officials were unaware of his injury, although that heat seems to have died down since most are now aware that he is indeed hurt. There was, however, some internal grumbling that Rock could have at least come out on Raw to cut a promo. The scene at Raw prior to the show was described as chaotic because most of the creative team was not made aware of Rock's injury until the late afternoon, causing rewrites to be made hastily.