[by Julie Goldsticker/USA Boxing]  A trio of U.S. women moved on to the finals of the 2012 Women’s Continentals Championships with semifinal wins on Friday at the NAV Centre in Cornwall, Ontario, Canada. Flyweight Marlen Esparza (Houston, Texas), featherweight Tiara Brown (Lehigh Acres, Fla.) and middleweight Claressa Shields (Flint, Mich.) each enjoyed wins on Friday