Olympic gold medallist and triple world champion Carolina Marin is the stand-out name on home soil at the Badminton World Federation Spain Masters, which begins tomorrow.
The 25-year-old is seeded first in the women's draw after winning her third world title earlier this month in Nanjing.
She regained the title she last won in Jakarta in 2015, with the Spaniard also successful in Copenhagen a year earlier.
In addition, Marin is a four-time European champion and the Rio 2016 Olympic gold medallist.
It means she will be a big favourite for success at Barcelona's Pavelló de la Vall d'Hebron.
Competition at the Super 300 event could come from second seeded Japanese player Sayaka Takahashi, who won the Uber Cup with her country this year.
European Games bronze medallist Beatriz Corrales, seeded eighth, will be another home hope for Spain.
In the men's draw, Suppanyu Avihingsanon is the top seed.
The Thai won the Summer Universiade title in Shenzen in 2011.
Rasmus Gemke, a European team champion with Denmark this year, is seeded second.
Competition will continue until September 2.