Justin Rose offered words of support to Seve Ballesteros today as the Spanish legend underwent a third operation to remove a brain tumour.
The Englishman, who had just completed his second round at the Castellon Masters, said all the players were waiting on tenterhooks for further news.
Ballesteros, the 51-year-old five-time major winner, was diagnosed with the tumour earlier this month and has already had two operations - the second to reduce swelling on the brain.
The latest operation began at 0830 this morning and was scheduled to last for around 10 hours.
"Everyone is keeping a very close eye on the situation and wishing Seve all the best," said Rose. "I haven't heard any more today but we are all wishing him and his family well.
"I know everyone here is sending their heartfelt best wishes and thinking of him."
Leader Alvaro Quiros, who won the Portugal Masters last week, echoed Rose's sentiments, adding: "We can't help him with words, that won't be enough.
"It is not in our hands and all I can say is good luck to Seve and I hope he recovers."