Career
She reached her individual career-high singles ranking on 2 October 1995, when Kamstra became the number 70 of the world. Twice she was named the Rotterdam Sportswoman of the Year (1990 and 1992). Women's Tennis Association
= Doubles Surabaya 1995: partnering with Tina Križan, beating Nana Miyagi / Stephanie Reece 2–6, 6–4, 6–1
International Tennis Federation
= Singles Koksijde 1989: beating Heleen van den Berg 7–5, 7–5
Madeira 1990: losing to Sabine Gerke 6–1, 6–1
Okada 1990: beating Sarah Bentley 6–0, 7–5
Brindisi 1993: losing to Irina Spîrlea 6–1, 5–7, 6–3
Le Havre 1993: losing to Ludmila Richterová 6–7, 6–3, 6–4
Carthage 1995: losing to Maria Fernanda Landa 2–3 retired
= Doubles Madeira 1990: partnering with Monica Mraz, losing to Cora Linneman / Stephanie Mayorkis 6–4, 7–5
Ashkelon 1992: partnering with Ilana Berger, beating Michelle Anderson / Limor Zaltz 6–2, 2–6, 6–4
Brindisi 1993: partnering with Lara Bitter, beating Angela Kerek / Irina Spîrlea 7–5, 4–6, 6–2
Vigo 1993: partnering with Linda Niemantsverdriet, losing to Maria Fernanda Landa / Sofia Prazeres 7–6, 3–6, 7–6.
