She played for Western New York Flash in the NWSL and was a member of the United States U-23 women's national soccer team.

She attended Unity Christian High School in her hometown of Hudsonville, Michigan where she graduated cum laude.

[3] Heyboer won the State Cup and national title with club team, Bloomfield Force.

With the Force, she won the Golden Boot award as most outstanding player at a national tournament and was named MVP of the 2006 San Diego Surf Cup.

She became the first freshman in league history to win Offensive Player of the Year since the award's inception in 2004.

She started the first 15 games of the season before suffering a knee injury while scoring the game-winning goal against Minnesota in overtime.

[3] As a junior, Heyboer started all 19 games and ranked fifth in school history for career game-winners with 13, second in all-time points with 95, and scored a team-best of 10 goals.

She traveled to Japan with members of Sky Blue FC and Western New York Flash to play in a few exhibition games against INAC Kobe Leonessa.

[6][7] The team clinched the league championship title after a win over the Chicago Red Stars after overtime and a penalty kick shootout.

[14] In her 216 minutes played, Heyboer tallied one assist, a helper to Samantha Kerr against the Boston Breakers on April 27.