Sydney:Nikolay Davydenko has been fined $10,000 for making negative comments about the Sydney International tennis tournament after retiring from his first-round match with a foot problem. "I'm satisfied that the US$10,000 fine for Davydenko is the appropriate sanction for the comments that were made that not only damaged the very fine tournament in Sydney but also sullies the reputation of our great sport," ATP chairman Etienne De Villiers said in a statement on Thursday. "I learned by painful example that I should engage my brain before opening my mouth." Davydenko, who played more tournaments than any other top 10 player last season, was the fifth high-profile player to withdraw from the Sydney tournament this week. Number 2-ranked Rafael Nadal and Thailand's Paradorn Srichaphan pulled out on the men's side, while Russians Nadia Petrova and Svetlana Kuznetsova retired from their early-round women's matches. Women's No 1 Justine Henin-Hardenne withdrew before the tournament, citing personal problems, and former champion Lleyton Hewitt pulled out of the men's draw with a calf muscle complaint. After retiring from his match on Wednesday, No 3-ranked Davydenko described the Sydney International as "small tournament" that "nobody cares about". "I remain concerned about the numerous withdrawals. I need to better understand the reasons for the withdrawals in Sydney but on the face of it, it seems some players are still looking at the event as an option rather than a commitment," De Villiers said. "I will address this again at the mandatory players meeting in Melbourne this weekend and at the ATP Player Council." Davydenko was en route to Melbourne on Thursday and did not comment.