Javier Ballesteros, son of former world number one Seve, has won the amateur Madrid Open.
The 22-year-old, a law student in Madrid, finished six under par to win by four shots.
He dedicated the victory to his late father, a five-time major champion, who died aged 54 in May 2011 after a long battle with cancer.
"My father always told me that you have to play with what you've got, and that's what I did," Javier said.
"I thought about him a lot during the 18 holes and I dedicate this victory to him and my mother."
The victory in Madrid is the biggest to date for Javier, who has delayed a decision on turning professional until after he completes his law studies at the city's Complutense University.
He made his first appearance in a professional event at the Peugeot Alps de Barcelona tournament in April and finished tied for 12th, 12 shots behind winner Pablo Larrazabal, after a final round of 68.
His father won five major titles, winning the Open in 1979, 1984 and 1988, and the Masters in 1980 and 1983.
He also played for Europe at eight Ryder Cups, and captained them to victory in his native Spain in 1997.