Jorge J. Muñiz Ortiz San Juan, Jan 10 (EFE). – Puerto Rican boxer Amanda Serrano, 36, who will defend her five featherweight titles in her homeland on March 2, revealed to EFE that she plans to retire after 50 victories, four from her current milestone. The end of Serrano’s extraordinary career (46-2-1, 30 KOs) could …