Green To Challenge Andre Ward For WBA World Championship Saturday, April 24, Live on SHOWTIME® NEW YORK (Feb. 22, 2010)–-World-ranked contender “Sweetness” Allan Green (29-1, 20 KOs), of Tulsa, Okla., has officially been named to replace fellow American Jermain Taylor in the Super Six World Boxing Classic and will take on undefeated World Boxing Association…