Ellis was hired by United States Soccer Federation as the interim coach of United States women's national soccer team, following an early departure of Pia Sundhage, in October 2012, for the head coach position of Sweden women's national football team.
Pia Zadora | Pia Miranda | Pia Sundhage | Pia Fries | Pia Cramling | Pia Arcangel | Torrevecchia Pia | Secondo Pia | Sarah Pia Anderson | Princess Maria Pia of Bourbon-Parma | Pia Toscano | Pia Nielsen | Pia Kjærsgaard | PIA Flight 705 | Pia Douwes | Pia de' Tolomei | Pia Borgli | Pascal Pia | Maria Pia & Timoteo | Maria Pia De Vito |
Among the club's stars in 2004 were USA internationals Kristine Lilly, Christie Welsh, and Kate Markgraf; they were coached by Pia Sundhage.
Ellis was a scout for the U.S. women's national team, at the Sydney 2000 Olympics; and served as an assistant coach under Pia Sundhage when the U.S. women’s national team won the gold medal at the Beijing 2008 Olympics.