Petra Kamstra

Petra Kamstra (born 18 March 1974) is a former professional tennis player from the Netherlands, who won one WTA-title in doubles during her 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).

WTA

Doubles

• Surabaya 1995: partnering with Tina Križan, beating Nana Miyagi / Stephanie Reece 2–6, 6–4, 6–1

ITF

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 María-Fernanda Landa 2–3 ret.

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 María-Fernanda Landa / Sofia Prazeres 7–6, 3–6, 7–6