How come in this article from ign it says
"Fedor Emelianenko, a 6'0", 231 pound Russian heavyweight mixed martial arts fighter, who excels in Sambo and Judo, holds a 30-1 record and is the current WAMMA Heavyweight champion. Prior to signing on with STRIKEFORCE
, Emelianenko defended his WAMMA championship by knocking out former UFC Heavyweight Champion Andrei Arlovski."
Did he sign with Strikeforce?