The Rio 2016 gold medallist is the top women's seed for the tournament at the Pavelló de la Vall d'Hebron.

Marin spent eight months on the sidelines last year after suffering an ACL injury but has been working her way back to her best form as Tokyo 2020 approaches.

The three-time world champion has been handed a clash with Russia's Natalia Perminova in the first round.

No home player has won a title at the Spain Masters in singles or doubles since the tournament's inaugural edition in 2018.

Marin's rivals at the BWF World Tour Super 300 event include Denmark's second seed Mia Blichfeldt, the 2019 champion.

The European Games gold medallist will meet Indonesia's Lyanny Alessandra Mainaky in round one.

Thailand's Busanan Ongbamrungphan is seeded third and opens against England's Chloe Birch.

Others to watch include India's fifth seed Saina Nehwal, the former world number one and Commonwealth Games champion who meets Germany's Yvonne Li.

In the men's event, Denmark's number one seed Viktor Axelsen will defend his title from last year.

The 2017 world champion has been handed an opening test against Singapore's Loh Kean Yew.

India's World Championships bronze medallist B. Sai Praneeth is seeded second and has been drawn with compatriot Sameer Verma.

The third seed is also Indian, with Srikanth Kidambi taking on team-mate Subhankar Dey first-up.

Denmark's Rasmus Genke, the fifth seed, won the Spain Masters in 2018 and will meet a qualifier to start.

Action will take place until the finals on Sunday (February 23).