Following Shannon Briggs deciding to sign with Don King Productions, Boxingtalk.com has been informed that IBF heavyweight champion Wladimir Klitschko will now face undefeated heavyweight contender Calvin Brock on his November 11 HBO World Championship Boxing date. Klitschko-Brock will take place at Madison Square Garden in New York City.  Kery Davis, Shelly Finkel and Calvin Brock were all unavailable for immediate comment but there should be more to follow, until then, Remember where you heard it first! 8:09