In 2013, Dahlkemper signed with the Pali Blues in the W-League. The team won the western conference title as well as the national championship in July 2013.
In January 2015, Dahlkemper was selected by the Western New York Flash in the 2015 NWSL College Draft as the third overall pick. She was signed to the team in March and made her debut in April. Dahlkemper won the NWSL Championship with the Flash in 2016.
Dahlkemper became part of the North Carolina Courage in 2017 after the Western New York Flash were sold to the owners of North Carolina FC. She played every minute for the Courage in 2017 helping them win the NWSL Shield. Dahlkemper was named to the 2017 NWSL Best XI. Dahlkemper was voted NWSL Defender of the Year for the 2017 Season. In 2018 Dahlkemper played 19 regular season games for North Carolina. She was an important part of North Carolina's defence which broke the record for fewest goals conceded and repeated as NWSL Shield winners. She was named to the 2018 NWSL Best XI and was a finalist for Defender of the year. North Carolina won the 2018 NWSL Championship with a 3–0 win over Portland, and didn't concede any goals in the playoffs.
Club summary
International career
In 2013, Dahlkemper represented the United States under-23 women's national soccer team at the 2013 Four Nations Tournament helping the under-23 team win the championship. She played in the 2014 Six Nations Tournament as a member of the under-23 team and helped lead the team to win the championship for a second time. Dahlkemper received her first call-up to the U.S. Women's National Team in October 2016 for a set of friendlies against Switzerland. On October 19 she earned her first cap, as she came in as a second-half substitute. Due to a sepsis infection contracted at the end of 2016, Dahlkemper was unable to appear for the U.S. WNT until June 2017. Following her recovery from sepsis, Dahlkemper quickly became a mainstay for the United States in central defense. She played her first 90 for the U.S. WNT against Norway on June 11, 2017. Dahlkemper would start 10 of the final 11 games of the year, accumulating 945 minutes in 2017, which was fifth highest on the team. In 2018 Dahlkemper won the SheBelieves Cup and the Tournament of Nations with the U.S. WNT. On September 19, she was named to the final 20 player roster for the 2018 CONCACAF Women's Championship. In 2019, Dahlkemper was the starting central defender for the national team beside Becky Sauerbrunn at the 2019 FIFA Women's World Cup in France, marking her first World Cup appearance. Dahlkemper and goalkeeper Alyssa Naeher were the only players to start every match of the tournament for the United States, with Dahlkemper playing every minute of the team's seven games aside from coming off in the 82nd minute against Chile in the group stage. Dahlkemper and the United States defeated the Netherlands 2–0 in the final to win the United States' fourth Women's World Cup title.
