Seeded fifth this week, the Spaniards coasted past Austria's Eva Freiberger and Elisabeth Klopf 21-16, 21-13 in the first round of the women's event.

Japanese fourth seeds Miki Ishii and Megumi Murakami also progressed but had to come from a set down.

Norwegian duo Ingrid Lunde and Oda Johanne Ulveseth moved in front by winning the opening set 21-16.

However, the Japanese duo responded by winning the second and third 21-14, 15-10.

Germany's Kim Behrens and Sandra Ittlinger enjoyed a much more comfortable win, overcoming Swedish pairing Kristina and Susanna Thurin 21-13, 21-15.

There was also success for Romania's Adriana-Maria Matei and Beata Vaida.

They proved too strong for France's Aline Chamereau and partner Lezana Placette, winning 21-19, 21-14.

Action also took place in the men's qualification event today.

The United States' William Kolinske and Miles Evans were forced to come from behind to beat Ukraine's Evgen Zhuravel and Iaroslav Gordieiev 25-27, 21-17, 15-7 to advance.

They will be joined by Germany's Yannick Harms and Philipp Arne Bergmann after they eliminated Jan Dumek and David Lenc of the Czech Republic 21-15, 21-16.

Ukraine's Sergiy Popov and Oleksii Denin are also through after recording a 21-16, 21-13 win over Swedish duo Martin Appelgren and Simon Boman.

Turkey's Murat Giginoglu and Hasan Huseyin Mermer complete the list of qualifiers.

They brushed aside Japan's Yu Koshikawa and Yoshiumi Hasegawa 29-27, 21-17.