Question: What sport does both Menno Oosting and Sania Mirza professionally play?

Context paragraphs:
1995 Grand Prix Hassan II – Doubles: David Adams and Menno Oosting were the defending champions, but did not participate this year.

1996 Copenhagen Open – Doubles: Mark Keil and Peter Nyborg were the defending champions but they competed with different partners that year, Keil with Jeff Tarango and Nyborg with Menno Oosting.

1996 European Community Championships – Doubles: Jonas Björkman and Nicklas Kulti won in the final 6–4, 6–4 against Yevgeny Kafelnikov and Menno Oosting.

Tennis at the 2010 Asian Games – Mixed doubles: At the 2010 Asian Games in the Mixed doubles tennis event, Sania Mirza and Leander Paes were the defending champions, but only Mirza participated, as Paes was involved in the Tour Finals.  Mirza partnered up with Vishnu Vardhan.  They went on to win the silver medal after losing to Chan Yung-jan and Yang Tsung-hua in the final 6–4, 1–6, [2–10].

Menno Oosting: Menno Oosting (17 May 1964 – 22 February 1999) was a professional tennis player from the Netherlands, who won seven ATP Tour doubles titles out of 18 finals in his career.

1993 BMW Open – Doubles: David Adams and Menno Oosting were the defending champions, but did not participate this year.

1997 Croatian Indoors – Doubles: Menno Oosting and Libor Pimek were the defending champions but they competed with different partners that year, Oosting with David Adams and Pimek with Peter Nyborg.

1996 Croatian Indoors – Doubles: Menno Oosting and Libor Pimek won in the final 6–3, 7–6 against Martin Damm and Hendrik Jan Davids.

Sania Mirza: Sania Mirza (] ; born 15 November 1986) is an Indian professional tennis player who was formerly ranked No. 1 in the women's doubles rankings.  From 2003 until her retirement from singles in 2013, she was ranked by the Women's Tennis Association as India's No. 1 player, both in singles and doubles.  Throughout her career, Mirza has established herself as the most successful female Indian tennis player ever and one of the highest-paid and high-profile athletes in the country.

1999 St. Petersburg Open – Doubles: Jeff Tarango and Daniel Vacek won in the final 3–6, 6–3, 7–5 against Menno Oosting and Andrei Pavel.

Supporting paragraphs: Menno Oosting Sania Mirza
Answer: Tennis