U.S. Olympian Jason “Big Six” Estrada returns to the ring April 1 in the “Homecoming” Pro-Am boxing show, co-promoted by Jimmy Burchfield’s Classic Entertainment & Sports, Inc. (CES) and Guilty Boxing, at the New Haven Athletic Center. Hometown hero “Bad” Chad Dawson (16-0, 11 KOs), World Boxing Council Youth middleweight champion and rated No. 14 in the world, headlines the card. [details (http://www.boxingscene.com/?m=show&id=899)]