On January 11, 2013, Morgan was one of three U.S. national team players to join the Portland Thorns FC for the inaugural season of the National Women's Soccer League via the NWSL Player Allocation.[42] She scored her first goal for the Thorns during the team's home-opener at Jeld-Wen Field in front of 16,479 spectators helping her team defeat the Seattle Reign FC 2–1.[43][44] She finished the regular season as the team's point leader, and joint scoring leader (with Christine Sinclair), with eight goals and five assists (21 points).[45] The club finished third during the regular season led by head coach Cindy Parlow Cone.[46] On August 31, 2013, Portland captured the league's inaugural championship title after defeating regular season champions Western New York Flash 2–0; Morgan assisted on the second goal.[47] Morgan was named to the NWSL Second XI on August 28.[48]