Rowby-John Rodriguez has withdrawn from the Hungarian Darts Trophy for family reasons ahead of his first round tie on Friday.
The Austrian's daughter had an operation on Thursday, and following complications, Rodriguez had remained at the hospital.
Although her situation has improved, Rodriguez has withdrawn from competing in Hungary, where he was due to take on Raymond van Barneveld in the first round on Friday evening.
"We had hoped that my daughter's operation on Thursday would be straightforward and that I would be able to compete in Budapest," said Rodriguez.
"Most people will know that she has had heart problems in the past and previously needed operations, and this operation has also been a success but was followed by some minor complications.
"Happily, she is okay now and on the road to recovery."
Rodriguez, a runner-up at the European Darts Matchplay in July, added: "It's disappointing that I can't compete in Hungary as I was excited about getting back into action, but my family comes first.
"I wish Raymond and all the other players in Budapest good luck, and I look forward to my return to playing at the Gibraltar Darts Trophy next month."
Van Barneveld now receives a Bye through to Saturday's second round, where he will play former Grand Slam Champion Jose de Sousa.