Alessia Filippi of Italy is pictured from underwater as she strikes the water surface at the start of the women's 800 metre freestyle final at the swimming World Cup in Berlin November 14, 2009. REUTERS/Wolfgang Rattay (GERMANY)

Alessia Filippi of Italy competes in the women's 400m individual medley swimming heats at the World Championships in Rome on August 2, 2009. REUTERS/Laszlo Balogh (ITALY SPORT SWIMMING IMAGES OF THE DAY)

Bronze medallist Alessia Filippi of Italy celebrates on the podium after the women's 800m freestyle swimming final at the World Championships in Rome August 1, 2009. REUTERS/Alessandro Bianchi (ITALY SPORT SWIMMING)

Bronze medallist Alessia Filippi of Italy celebrates on the podium after the women's 800m freestyle swimming final at the World Championships in Rome August 1, 2009. REUTERS/Alessandro Bianchi (ITALY SPORT SWIMMING)

Bronze medallist Alessia Filippi of Italy reacts on the podium after the women's 800m freestyle swimming semi-final at the World Championships in Rome August 1, 2009. REUTERS/Alessandro Bianchi (ITALY SPORT SWIMMING)

Bronze medallist Alessia Filippi of Italy smiles on the podium after the women's 800m freestyle swimming semi-final at the World Championships in Rome August 1, 2009. REUTERS/Alessandro Bianchi (ITALY SPORT SWIMMING)

Alessia Filippi of Italy reacts after competing in the women's 800m freestyle swimming final at the World Championships in Rome August 1, 2009. REUTERS/Max Rossi (ITALY SPORT SWIMMING)

Alessia Filippi of Italy reacts after competing in the women's 800m freestyle swimming final at the World Championships in Rome August 1, 2009. REUTERS/Max Rossi (ITALY SPORT SWIMMING)

Alessia Filippi of Italy competes in the women's 800m freestyle swimming final at the World Championships in Rome August 1, 2009. REUTERS/Tony Gentile (ITALY SPORT SWIMMING)

Alessia Filippi of Italy reacts after competing in the women's 800m freestyle swimming final at the World Championships in Rome August 1, 2009. REUTERS/Alessandro Bianchi (ITALY SPORT SWIMMING)

Alessia Filippi of Italy reacts after competing in the women's 800m freestyle swimming final at the World Championships in Rome August 1, 2009. REUTERS/Alessandro Bianchi (ITALY SPORT SWIMMING)

Alessia Filippi of Italy competes in the women's 800m freestyle swimming final at the World Championships in Rome August 1, 2009. REUTERS/Tony Gentile (ITALY SPORT SWIMMING)

Alessia Filippi of Italy rests in the pool after competing in the women's 800m freestyle swimming heats at the World Championships in Rome July 31, 2009. REUTERS/Wolfgang Rattay (ITALY SPORT SWIMMING)

Alessia Filippi of Italy competes in the women's 800m freestyle swimming heats at the World Championships in Rome July 31, 2009. REUTERS/Alessandro Bianchi (ITALY)

Alessia Filippi of Italy competes in the women's 800m freestyle swimming heats at the World Championships in Rome July 31, 2009. REUTERS/Wolfgang Rattay (ITALY SPORT SWIMMING)

Alessia Filippi of Italy competes in the women's 800m freestyle swimming heats at the World Championships in Rome July 31, 2009. REUTERS/Alessandro Bianchi (ITALY SPORT SWIMMING)

Alessia Filippi of Italy competes in the women's 800m freestyle swimming heats at the World Championships in Rome July 31, 2009. REUTERS/Stefano Rellandini (ITALY SPORT SWIMMING)

Alessia Filippi of Italy looks at the scoreboard after the women's 800m freestyle swimming heats at the World Championships in Rome July 31, 2009. REUTERS/Alessandro Bianchi (ITALY SPORT SWIMMING)

Gold medallist Alessia Filippi of Italy celebrates on the podium after winning the women's 1500m freestyle swimming final at the World Championships in Rome July 28, 2009. REUTERS/Wolfgang Rattay (ITALY SPORT SWIMMING)

Alessia Filippi of Italy celebrates after winning the gold medal in the women's 1500m freestyle swimming final at the World Championships in Rome July 28, 2009. REUTERS/Wolfgang Rattay (ITALY SPORT SWIMMING)

Alessia Filippi of Italy reacts after winning the women's 1500m freestyle swimming final at the World Championships in Rome July 28, 2009. REUTERS/Wolfgang Rattay (ITALY SPORT SWIMMING)

Alessia Filippi of Italy reacts after winning the women's 1500m freestyle swimming final at the World Championships in Rome July 28, 2009. REUTERS/Wolfgang Rattay (ITALY SPORT SWIMMING)

Alessia Filippi of Italy competes on her way to win the women's 1500m freestyle swimming final at the World Championships in Rome July 28, 2009. REUTERS/Wolfgang Rattay (ITALY SPORT SWIMMING)

Gold medallist Alessia Filippi of Italy stands on the podium after the women's 1500m freestyle swimming final at the World Championships in Rome July 28, 2009. REUTERS/Alessandro Bianchi (ITALY SPORT SWIMMING)

Italian fans celebrate compatriot Alessia Filippi's win in the women's 1500m freestyle swimming final at the World Championships in Rome July 28, 2009. REUTERS/Alessandro Bianchi (ITALY SPORT SWIMMING)

Gold medallist Alessia Filippi (C) of Italy poses witn silver medallist Lotte Friis (L) of Denmark and silver medallist Camelia Alina Potec of Romania on the podium after the women's 1500m freestyle swimming final at the World Championships in Rome July 28, 2009. REUTERS/Alessandro Bianchi (ITALY SPORT SWIMMING)

Gold medallist Alessia Filippi of Italy poses on the podium after the women's 1500m freestyle swimming final at the World Championships in Rome July 28, 2009. REUTERS/Alessandro Bianchi (ITALY SPORT SWIMMING)

Gold medallist Alessia Filippi of Italy poses on the podium after the women's 1500m freestyle swimming final at the World Championships in Rome July 28, 2009. REUTERS/Alessandro Bianchi (ITALY SPORT SWIMMING)

Gold medallist Alessia Filippi of Italy poses on the podium after the women's 1500m freestyle swimming final at the World Championships in Rome July 28, 2009. REUTERS/Alessandro Bianchi (ITALY SPORT SWIMMING)

Gold medallist Alessia Filippi of Italy poses on the podium after the women's 1500m freestyle swimming final at the World Championships in Rome July 28, 2009. REUTERS/Alessandro Bianchi (ITALY SPORT SWIMMING)

Gold medallist Alessia Filippi of Italy celebrates on the podium after winning the women's 1500m freestyle swimming final at the World Championships in Rome July 28, 2009. REUTERS/Laszlo Balogh (ITALY SPORT SWIMMING)

Alessia Filippi of Italy holds the Italian flag after winning the women's 1500m freestyle swimming final at the World Championships in Rome July 28, 2009. REUTERS/Stefano Rellandini (ITALY SPORT SWIMMING)

Alessia Filippi of Italy waves the Italian flag as she celebrates on the podium after winning gold medal in the women's 1500m freestyle swimming final at the World Championships in Rome July 28, 2009. REUTERS/Tony Gentile (ITALY SPORT SWIMMING)

Alessia Filippi of Italy waves the Italian flag as she celebrates on the podium after winning gold medal in the women's 1500m freestyle swimming final at the World Championships in Rome July 28, 2009. REUTERS/Tony Gentile (ITALY SPORT SWIMMING)

Gold medallist Alessia Filippi of Italy (C) celebrates on the podium with silver medallist Lotte Friis of Denmark (L) and bronze medallist Camelia Alina Potec of Romania after the women's 1500m freestyle swimming final at the World Championships in Rome July 28, 2009. REUTERS/Laszlo Balogh (ITALY SPORT SWIMMING)

Gold medallist Alessia Filippi of Italy (C) celebrates on the podium with silver medallist Lotte Friis of Denmark (L) and bronze medallist Camelia Alina Potec of Romania after the women's 1500m freestyle swimming final at the World Championships in Rome July 28, 2009. REUTERS/Laszlo Balogh (ITALY SPORT SWIMMING)

Alessia Filippi of Italy competes in the women's 1500m freestyle swimming final at the World Championships in Rome July 28, 2009. REUTERS/Stefano Rellandini (ITALY SPORT SWIMMING)

Supporters on the tribune celebrate after Alessia Filippi of Italy won the gold medal in the women's 1500m freestyle swimming finalat the World Championships in Rome July 28, 2009. REUTERS/Max Rossi (ITALY SPORT SWIMMING)

Alessia Filippi of Italy celebrates on the podium after winning gold medal in the women's 1500m freestyle swimming final at the World Championships in Rome July 28, 2009. REUTERS/Tony Gentile (ITALY SPORT SWIMMING)

Alessia Filippi of Italy (R) reacts after winning the women's 1500m freestyle swimming final at the World Championships in Rome July 28, 2009. REUTERS/Alessandro Bianchi (ITALY SPORT SWIMMING)

Alessia Filippi of Italy competes on her way to win the women's 1500m freestyle swimming final at the World Championships in Rome July 28, 2009. REUTERS/Alessandro Bianchi (ITALY SPORT SWIMMING)

Alessia Filippi of Italy celebrates after winning in the women's 1500m freestyle swimming final at the World Championships in Rome July 28, 2009. REUTERS/Stefano Rellandini (ITALY SPORT SWIMMING)

Alessia Filippi of Italy competes in the women's 1500m freestyle swimming final at the World Championships in Rome July 28, 2009. REUTERS/Stefano Rellandini (ITALY SPORT SWIMMING)

Alessia Filippi of Italy competes on her way to win the women's 1500m freestyle swimming final at the World Championships in Rome July 28, 2009. REUTERS/Alessandro Bianchi (ITALY SPORT SWIMMING)

Alessia Filippi of Italy (R) is congratulated by Lotte Friis of Denmark after winning the women's 1500m freestyle swimming final at the World Championships in Rome July 28, 2009. REUTERS/Alessandro Bianchi (ITALY SPORT SWIMMING)

Alessia Filippi of Italy reacts after winning the women's 1500m freestyle swimming final at the World Championships in Rome July 28, 2009. REUTERS/Alessandro Bianchi (ITALY SPORT SWIMMING)

Alessia Filippi of Italy celebrates after winning in the women's 1500m freestyle swimming final at the World Championships in Rome July 28, 2009. REUTERS/Stefano Rellandini (ITALY SPORT SWIMMING)

Alessia Filippi of Italy celebrates after winning the gold medal in the women's 1500m freestyle swimming finalat the World Championships in Rome July 28, 2009. REUTERS/Max Rossi (ITALY SPORT SWIMMING IMAGES OF THE DAY)

Alessia Filippi of Italy celebrates after winning the gold medal in the women's 1500m freestyle swimming finalat the World Championships in Rome July 28, 2009. REUTERS/Max Rossi (ITALY SPORT SWIMMING)

Alessia Filippi of Italy celebrates after winning the gold medal in the women's 1500m freestyle swimming finalat the World Championships in Rome July 28, 2009. REUTERS/Max Rossi (ITALY SPORT SWIMMING)

Alessia Filippi of Italy (top) reacts after winning the women's 1500m freestyle swimming final at the World Championships in Rome July 28, 2009. REUTERS/Max Rossi (ITALY SPORT SWIMMING)

Alessia Filippi of Italy competes in the women's 1500m freestyle swimming final at the World Championships in Rome July 28, 2009. REUTERS/Tony Gentile (ITALY SPORT SWIMMING)

Alessia Filippi of Italy competes in the women's 1500m freestyle swimming final at the World Championships in Rome July 28, 2009. REUTERS/Tony Gentile (ITALY SPORT SWIMMING)

Alessia Filippi of Italy reacts after winning in the women's 1500m freestyle swimming final at the World Championships in Rome July 28, 2009. REUTERS/Stefano Rellandini (ITALY SPORT SWIMMING)

Alessia Filippi of Italy competes in the women's 1500m freestyle swimming final at the World Championships in Rome July 28, 2009. REUTERS/Tony Gentile (ITALY SPORT SWIMMING)

Alessia Filippi of Italy celebrates after winning the gold medal in the women's 1500m freestyle swimming finalat the World Championships in Rome July 28, 2009. REUTERS/Max Rossi (ITALY SPORT SWIMMING)

Alessia Filippi of Italy celebrates after winning the women's 1500m freestyle swimming final at the World Championships in Rome July 28, 2009. REUTERS/Max Rossi (ITALY SPORT SWIMMING)

Alessia Filippi of Italy celebrates after winning in the women's 1500m freestyle swimming final at the World Championships in Rome July 28, 2009. REUTERS/Tony Gentile (ITALY SPORT SWIMMING)

Alessia Filippi of Italy celebrates after winning the women's 1500m freestyle swimming final at the World Championships in Rome July 28, 2009. REUTERS/Max Rossi (ITALY SPORT SWIMMING)

Alessia Filippi of Italy celebrates victory after the women's 1500m freestyle swimming final at the World Championships in Rome July 28, 2009. REUTERS/Tony Gentile (ITALY SPORT SWIMMING)