Jose Canseco may be known for — among other things — knocking balls out of the park. But Saturday, he couldn't help but be a victim of a knockout of a different kind. The 6-foot-4 ex-slugger was KO'd by former Philadelphia Eagles kick returner, 5-foot-9 Vai Sikahema, in the first round of their celebrity boxing match in Atlantic City, according to a report by the Press of Atlantic City.