Westphal attended the University of Florida where she played as a center back for the Florida Gators women's soccer team from 2012–15. Her senior year, TopDrawerSoccer named her one of the top 10 women's soccer defenders in the NCAA's Division 1.[2] The same year she was named Southeastern Conference Soccer Defender of the Year.[3] Westphal was named to the All-SEC team every year of her collegiate career, and was named to the SEC first team three consecutive years.[3] Her senior year, she led the Gators (and tied for first in the SEC) in assists with 10 and was named as a Hermann Trophy semifinalist.[4][5]
Club career
Boston Breakers, 2016–17
Westphal was drafted by Boston Breakers in the first round of the 2016 NWSL College Draft.[6][7][8] She signed with Boston in March 2016 and made her debut on April 16, 2016, against Washington Spirit.[9][10] During her rookie season, she was a starting defender in 7 of the 13 games in which she played and scored one goal.[11] The goal against the Western New York Flash was nominated for Goal of the Week.[12] During the 2017 season, Westphal started in all 13 games that she played and recorded an assist. A right foot injury endured in a match against Seattle on July 15 ended her season prematurely.[11] The Breakers finished the 2017 season in ninth place with a 4–13–7 record.[11]
Westphal was out of contract after the 2019 season, and her NWSL rights were traded to Portland Thorns.[14]
San Diego Wave, 2022–2024
Immediately after the 2022 NWSL Expansion Draft, it was announced that San Diego Wave acquired the rights to Westphal and Amirah Ali from Portland via trade. San Diego had passed on several picks, instead negotiating the trade.[15]
Houston Dash, 2025–
On December 10, 2024, the San Diego Wave traded Westphal to the Houston Dash in exchange for a 2025 international roster spot and $14,000 in allocation money plus performance-based incentives.[16]