Ring of Honor Wrestling sent out the following:

In very unfortunate news, multi-time GHC Champion Naomichi Marufuji suffered a very serious knee injury over the weekend in Japan and will not be able to compete at “Border Wars 2013” or the TV Taping the following day. Ring of Honor officials are hard at work looking for a replacement for Marufuji and will have confirmation soon. Get well soon Marufuji!