FC Gold Pride In January 2010, Riley was selected as the tenth pick in the first round of the
2010 WPS Draft by
FC Gold Pride. While she played on her natural right wing-back position for the NZ Women's National Team, she played professionally as a left wing-back and had three assists in the 2010 run to the WPS championship by
FC Gold Pride. Riley won the WPS Rookie of the Year award.
Western New York Flash Riley signed for
Western New York Flash for the 2011 season, becoming a free agent after FC Gold Pride failed to find financial backers. In the 2011 season Riley was a finalist for Defender of the year as the Flash swept both the league season title and then won the
2011 WPS Championship. In 2012, Riley re-signed with
Western New York Flash for the 2012 season, however, the league folded before play began.
LdB FC Malmö/FC Rosengård With the suspension of the WPS, she signed in 2012 with
LdB FC Malmö, the 2011
Damallsvenskan champions. In her first game (the Supercupen), she assisted on the winning goal. She played her first full season in the
Damallsvenskan in 2013. With
LdB FC Malmö she finished top of the table. In September 2013 Riley re-signed with LdB FC Malmö (since December 2013 renamed FC Rosengård) for the 2014 and 2015 seasons.
FC Rosengård again won gold in the
Damallsvenskan in 2014. In March 2015 she played both at full-back and forward in her second Supercupen victory with Rosengård. In September 2015 she re-signed with Rosengård. The team went on to win the Damallsvenskan for the third straight year, earning Riley her fifth league championship in her eight-year career.
Chelsea On 26 June 2018, it was announced that Riley would be leaving Rosengård in July to join
Chelsea in the English
FA Women's Super League.
Bayern Munich On 18 July 2019, Riley moved to
Bayern Munich of the
Frauen-Bundesliga.
Orlando Pride On 10 February 2020, Ali Riley returned to the US and signed a one-year contract with an option for an additional year for the
Orlando Pride. The season was postponed due to the
coronavirus pandemic with the NWSL eventually scheduling a smaller schedule
2020 NWSL Challenge Cup tournament. However, on 22 June 2020, the team withdrew from the tournament following positive COVID-19 tests among both players and staff.
Loan to FC Rosengård On 13 July 2020, having been unable to feature for the Pride, Riley returned to Sweden to be with her partner during the pandemic and rejoined
Rosengård on loan.
Angel City FC, 2022–2025 On 27 January 2022, Riley was traded to
Angel City FC in exchange for $15,000 in allocation money and a third-round pick in the
2023 NWSL Draft. As a result of the trade, she was able to play in her hometown for the first time in her career. During the club's
inaugural season, Riley was a starting defender in 19 of the 20 games she played and recorded 1,591 minutes on the pitch. The club finished their first season in eighth place with a record. During the
2023 season, Riley started 15 of the 19 games she played. Angel City finished in fifth place during the regular season and advanced to the
playoffs for the first time where they were eliminated by
OL Reign in the quarter final match. Angel City announced on 22 August 2024 that Riley would be placed on the Season-Ending Injury (SEI) list due to a chronic and persistent leg injury that had kept her out for the majority of the
2024 season and forced her to miss the
2024 Olympics. Riley made her first appearance in a matchday squad since the injury during Angel City's 1–0 win against the Orlando Pride on 21 August 2025. On 30 September 2025, Riley announced that she would retire from professional soccer at the end of the
2025 NWSL season. ==International career==