Leading into the 2010 season, FC Gold Pride made several changes to their roster including adding Brazilian international Marta, French international Camille Abily, and United States national team defender and midfielder Shannon Boxx. During the team's home opener of the 2010 season against 2009 WPS champion, Sky Blue FC, Sinclair scored twice leading the team to a 3–1 win. She was named WPS Player of the Week for week 14 of the season after scoring two goals against second-place team, Philadelphia Independence. The team dominated the season, finishing first during the regular season after defeating the Philadelphia Independence 4–1 with goals from Sinclair, Marta, and Kelley O'Hara.