HONORS
NWSL Rookie of the Month for September/October 2023
CONCACAF Women's U-20 Championship 2020
Spaanstra started eight games and recorded a goal and an assist in 11 appearances for the Current in the 2024 regular season. Additionally, she played in four matches in the NWSL x Liga MX Femenil Summer Cup and one in the Women's Cup, where she scored the winning goal against South African club Mamelodi Sundowns on August 15. On August 19, 2024, Portland Thorns FC announced that they had acquired Spaanstra in a trade with the Kansas City Current in exchange for $25,000 in intra-league transfer funds and an additional $15,000 in allocation money.
The Kansas City Current selected Spaanstra tenth overall in the first round of the 2023 NWSL Draft. She was signed to a two-year contract in February 2023. She made fifteen appearances and five starts as a rookie.She recorded her first professional assist and her first goal in a 6–0 win over the Chicago Red Stars on October 7. She scored again the following week, helping salvage a 2–2 draw away at NJ/NY Gotham FC on October 15, and was recognized for her performances as the NWSL Rookie of the Month for September/October 2023.
Spaanstra trained with the United States youth national team beginning at the under-14 level in May 2013. She was called up to the national under-17 team in August 2014 to play friendlies in South Korea and trained with both the under-17 and under-20 teams in August 2015, aged 15. She helped the United States win the 2016 CONCACAF Women's U-17 Championship and competed at the 2016 FIFA U-17 Women's World Cup. She led the national under-19 team to win a tournament in China in September 2017 and was recognized as the tournament's most valuable player. While in college, she competed at the 2018 FIFA U-20 Women's World Cup and won the 2020 CONCACAF Women's U-20 Championship. She first played with the national under-23 team at an NWSL preseason tournament in February 2022
