Born in San Clemente, California, Reynolds was raised in Medina, Washington, a suburb east of Seattle. She attended University Prep where she was a three-time MVP and captained the team to the state title in 2004. Reynolds was a member of the Region IV Olympic Development Program team. She also played nine years for Eastside F.C. and played for the Seattle Sounder Saints in 2006. Reynolds was named Washington State Soccer Athlete of the Year and was named to the league's first team all four years. She also ran track, played basketball and tennis, was a two-time Track Athlete of the Year, and was an eight-time State Champion on the track.
Reynolds attended Santa Clara University from 2006 to 2009. She made 67 appearances for the Broncos. During her senior year, she started in all 22 games and was named to the MAC Hermann Trophy watch list. She also received NSCAA All-West Region Second Team recognition and was named to both the WCC Preseason All-Conference Team and the All-WCC Academic Team.
After being selected 34th overall by the Boston Breakers in the 2010 WPS Draft, Reynolds was later traded to the Philadelphia Independence for the 2010 WPS season. She made two appearances for the club.
Atlanta Beat
Reynolds signed with the Atlanta Beat for the 2011 WPS season. She made 18 starts in 18 matches playing a total of 1,602 minutes.
After the WPS suspended operations in early 2012, Reynolds signed with the Western New York Flash in the Women's Premier Soccer League Elite and helped the squad win the league title after scoring during the penalty shootout of the championship match.
Reynolds played for German side SC Freiburg for the 2012–2013 season. She made 16 starts in 16 matches, playing for a total of 1,440 minutes.
Western New York Flash (NWSL), 2013–2014
In 2013, Reynolds returned to the Western New York Flash for the inaugural season of the National Women's Soccer League. Upon her signing, Flash coach Aaran Lines said, "I'm very excited to have Reynolds back with us for her second stint at the club after gaining valuable experience with SC Freiburg in the German Bundesliga. She was instrumental in our success last season and I expect her to play a big role for us at outside back again!"
Newcastle Jets, 2014–15 (loan)
In September 2014, Reynolds joined the Newcastle Jets together with fellow Americans Angela Salem and Tori Huster.
Washington Spirit, 2015
Following the 2014 NWSL season, the Flash traded Reynolds and Angela Salem to the Washington Spirit for Jordan Angeli and a first-round pick—sixth overall—in the 2015 NWSL College Draft. That pick later became Lynn Williams. In the Spirit's 2015 season, Reynolds played for 1,611 minutes in 18 games.
Portland Thorns, 2016-present
Before the 2016 NWSL season, the Spirit traded Reynolds to the Portland Thorns in exchange for defender Alyssa Kleiner. Reynolds thus stayed with head coach Mark Parsons, who moved from the Spirit to the Thorns in the same off-season. Reynolds missed the first 14 games of the 2017 season due to a groin injury. In the 2017 Playoffs she played all 90 minutes in the Semi-Final and Championship game, helping the Thorns win the 2017 NWSL Championship. On May 30, 2018 Reynolds played in her 100th NWSL game, where scored her first career goal in a 4-1 loss to the North Carolina Courage. On July 21 in a game against Sky Blue FC she suffered a torn right MCL, which would require surgery and end her 2018 season.
International career
Reynolds represented the United States as a member of the United States U-23 women's national soccer team.
