Were Menno Oosting and Liezel Huber both professional tennis players?
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.
Rosmalen Grass Court Championships The Rosmalen Grass Court Championships, from 2016 on also known by its sponsored name "Ricoh Open", is a professional tennis tournament held in Rosmalen, 's-Hertogenbosch (Den Bosch), the Netherlands. The men's and women's tennis matches are played on outdoors grass courts at the Autotron convention center, and constitute a stage on the ATP Tour and the WTA Tour.