Cena was supposed to be sidelined for a lengthy period after he injured a pectoral muscle in the fall of 2007 .
Cena amazingly recovered enough to be able to participate in the 2008 Royal Rumble .
Cena was supposed to be sidelined for a lengthy period after he injured a pectoral muscle in the fall of 2007 , but he amazingly recovered enough to be able to participate in the 2008 Royal Rumble .