A right-handed player from Limburg, Gerards was the Dutch under-18 champion at the age of 13 and was a junior quarterfinalist at the 1999 French Open.

[1] Most of her professional career was spent on the ITF Women's Circuit, reaching a best ranking in singles of 207 in the world.

She made WTA Tour main-draw appearances at the 1999 Sanex Trophy in Knokke-Heist and 2000 Belgian Open, both times as a wildcard.

In 2005, she played two doubles matches, partnering Dutch veteran Brenda Schultz-McCarthy, winning both, over Poland and Luxembourg.

When she returned to the Fed Cup team in 2009, it was as a singles player and she won one match, over Claudine Schaul of Luxembourg.