Kansas City Current The
Kansas City Current selected Spaanstra tenth overall in the first round of the
2023 NWSL Draft. She signed a two-year contract. 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, and was recognized for her performances as the
NWSL Rookie of the Month for September/October 2023. 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.
Portland Thorns On August 19, 2024,
Portland Thorns FC acquired Spaanstra in exchange for $25,000 in intraleague transfer funds and $15,000 in allocation money. In her first year and a half with the Thorns, Spaanstra made 11 starts in 28 appearances across all competitions. She recorded two assists, with one of them coming against
Angel City FC in October 2025 to help Portland clinch a spot in the
2025 NWSL playoffs. ==International career==