(Portland, OR)  --  Fifteen-year-old Olivia Moultrie is now the youngest NWSL player ever after signing a three-year deal with the Portland Thorns.  Moultrie had been training with the Thorns since she was 13 and was offered a scholarship to the University of North Carolina when she was just 11 years old.  In May, Moultrie filed an antitrust lawsuit against the NWSL and its rule of only allowing players 18 and over.  The lawsuit argued that the NWSL's rule impeded her career development and violated the Sherman Antitrust Act.