Czech Republic's tennis player Petra Kvitova poses for a picture with her coaches during a news conference, after she was injured on Tuesday when she fought off an intruder in her home, damaging all the fingers on her playing hand, in Prague, Czech Republic December 23, 2016. REUTERS/David W Cerny 

Czech Republic's tennis player Petra Kvitova speaks during a news conference, after she was injured on Tuesday when she fought off an intruder in her home, damaging all the fingers on her playing hand, in Prague, Czech Republic December 23, 2016. REUTERS/David W Cerny 

Czech Republic's tennis player Petra Kvitova speaks during a news conference, after she was injured on Tuesday when she fought off an intruder in her home, damaging all the fingers on her playing hand, in Prague, Czech Republic December 23, 2016. REUTERS/David W Cerny 

Czech Republic's tennis player Petra Kvitova speaks during a news conference, after she was injured on Tuesday when she fought off an intruder in her home, damaging all the fingers on her playing hand, in Prague, Czech Republic December 23, 2016. REUTERS/David W Cerny 

Czech Republic's tennis player Petra Kvitova leaves after a news conference, after she was injured on Tuesday when she fought off an intruder in her home, damaging all the fingers on her playing hand, in Prague, Czech Republic December 23, 2016. REUTERS/David W Cerny 

Czech Republic's tennis player Petra Kvitova reacts during a news conference after she was injured on Tuesday when she fought off an intruder in her home, damaging all the fingers on her playing hand, in Prague, Czech Republic December 23, 2016. REUTERS/David W Cerny 

Czech Republic's tennis player Petra Kvitova speaks during a news conference, after she was injured on Tuesday when she fought off an intruder in her home, damaging all the fingers on her playing hand, in Prague, Czech Republic December 23, 2016. REUTERS/David W Cerny 

Czech Republic's tennis player Petra Kvitova speaks during a news conference, after she was injured on Tuesday when she fought off an intruder in her home, damaging all the fingers on her playing hand, in Prague, Czech Republic December 23, 2016. REUTERS/David W Cerny 

Czech Republic's tennis player Petra Kvitova speaks during a news conference, after she was injured on Tuesday when she fought off an intruder in her home, damaging all the fingers on her playing hand, in Prague, Czech Republic December 23, 2016. REUTERS/David W Cerny 

Princess Charlene of Monaco comforts her daughter Princess Gabriella during the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Princess Charlene of Monaco comforts her daughter Princess Gabriella during the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Prince Albert II of Monaco, his wife Princess Charlene and their daughter Princess Gabriella arrive at the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Princess Charlene of Monaco attends the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Prince Albert II of Monaco (R), his wife Princess Charlene (L) and their twins Prince Jacques (2ndL) and Princess Gabriella (2ndR) arrive to attend the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

(L-R) Camille Gottlied, Louis Ducruet, Princess Charlene, Princess Gabriella and Prince Albert II of Monaco arrive for the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Princess Charlene of Monaco (C), Prince Albert II (R) and Louis Ducruet (L) give presents to Monaco's children during the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Princess Charlene of Monaco gives presents to Monaco's children during the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Prince Albert II of Monaco and his wife Princess Charlene of Monaco give presents to Monaco's children during the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Princess Charlene of Monaco gives presents to Monaco's children during the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Princess Charlene of Monaco comforts her daughter Princess Gabriella during the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Princess Charlene of Monaco comforts her daughter Princess Gabriella during the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Princess Charlene of Monaco comforts her daughter Princess Gabriella during the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Prince Albert II of Monaco, his wife Princess Charlene and their son Prince Jacques attend the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Princess Charlene of Monaco hugs children as she attends the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Prince Albert II of Monaco, his wife Princess Charlene and their son Prince Jacques attend the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Princess Charlene of Monaco holds her son Prince Jacques during the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Prince Albert II of Monaco, his wife Princess Charlene and their son Prince Jacques attend the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Prince Albert II of Monaco (C), Princess Charlene (L), their son Prince Jacques (2ndL), Camille Gottlied (2dnR) and Louis Ducruet (R) attend the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Prince Albert II of Monaco, his wife Princess Charlene and their son Prince Jacques attend the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Prince Albert II of Monaco, his wife Princess Charlene and their son Prince Jacques attend the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Prince Albert II of Monaco (C), Princess Charlene (L), their son Prince Jacques (2ndL), Camille Gottlied (2dnR) and Louis Ducruet (R) attend the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Princess Charlene of Monaco holds her son Prince Jacques during the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Prince Albert II of Monaco (C), Princess Charlene (L), their son Prince Jacques (2ndL), Camille Gottlied (2dnR) and Louis Ducruet (R) attend the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Prince Albert II of Monaco (R), his wife Princess Charlene (L) and their twins Prince Jacques (2ndL) and Princess Gabriella (2ndR) arrive to attend the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Prince Albert II of Monaco (R), his wife Princess Charlene and their son Prince Jacques attend the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Prince Albert II of Monaco (R), his wife Princess Charlene and their son Prince Jacques attend the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Prince Albert II of Monaco (L), his wife Princess Charlene (R) and their son Prince Jacques attend the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Princess Charlene of Monaco waves as she holds her son Prince Jacques during the traditional Christmas tree ceremony at the Monaco Palace as part of Christmas holiday season in Monaco December 14, 2016. REUTERS/Eric Gaillard 

Figure Skating - ISU Grand Prix of Figure Skating Final 2016/2017 - Exhibition Gala - Marseille, France - 11/12/16 - Evgenia Medvedeva of Russia performs. REUTERS/Jean-Paul Pelissier 

Figure Skating - ISU Grand Prix of Figure Skating Final 2016/2017 - Exhibition Gala - Marseille, France - 11/12/16 - Evgenia Medvedeva of Russia performs. REUTERS/Jean-Paul Pelissier 

Boxing Britain - Katie Taylor v Viviane Obenauf - Manchester Arena - 10/12/16 Katie Taylor before the fight Action Images via Reuters / Andrew Couldridge Livepic EDITORIAL USE ONLY. 

Boxing Britain - Katie Taylor v Viviane Obenauf - Manchester Arena - 10/12/16 Katie Taylor before the fight Action Images via Reuters / Andrew Couldridge Livepic EDITORIAL USE ONLY. 

Figure Skating - ISU Grand Prix of Figure Skating Final 2016/2017 - Ladies Free Skating - Marseille, France - 10/12/16 - Evgenia Medvedeva of Russia competes. REUTERS/Jean-Paul Pelissier

Figure Skating - ISU Grand Prix of Figure Skating Final 2016/2017 - Ladies Free Skating - Marseille, France - 10/12/16 - Evgenia Medvedeva of Russia competes. REUTERS/Jean-Paul Pelissier

Figure Skating - ISU Grand Prix of Figure Skating Final 2016/2017 - Ladies Free Skating - Marseille, France - 10/12/16 - Evgenia Medvedeva of Russia competes. REUTERS/Jean-Paul Pelissier

Figure Skating - ISU Grand Prix of Figure Skating Final 2016/2017 - Ladies Free Skating - Marseille, France - 10/12/16 - Evgenia Medvedeva of Russia competes. REUTERS/Jean-Paul Pelissier

Figure Skating - ISU Grand Prix of Figure Skating Final 2016/2017 - Ladies Free Skating - Marseille, France - 10/12/16 - Evgenia Medvedeva of Russia competes. REUTERS/Jean-Paul Pelissier

Figure Skating - ISU Grand Prix of Figure Skating Final 2016/2017 - Ladies Free Skating - Marseille, France - 10/12/16 - Evgenia Medvedeva of Russia competes. REUTERS/Jean-Paul Pelissier

Figure Skating - ISU Grand Prix of Figure Skating Final 2016/2017 - Ladies Free Skating - Marseille, France - 10/12/16 - Evgenia Medvedeva of Russia competes. REUTERS/Jean-Paul Pelissier

Figure Skating - ISU Grand Prix of Figure Skating Final 2016/2017 - Ladies Free Skating - Marseille, France - 10/12/16 - Satoko Miyahara of Japan competes. REUTERS/Jean-Paul Pelissier

Figure Skating - ISU Grand Prix of Figure Skating Final 2016/2017 - Ladies Free Skating - Marseille, France - 10/12/16 - Satoko Miyahara of Japan competes. REUTERS/Jean-Paul Pelissier

Figure Skating - ISU Grand Prix of Figure Skating Final 2016/2017 - Ladies Free Skating - Marseille, France - 10/12/16 - Satoko Miyahara of Japan competes. REUTERS/Jean-Paul Pelissier

Figure Skating - ISU Grand Prix of Figure Skating Final 2016/2017 - Ladies Free Skating - Marseille, France - 10/12/16 - Satoko Miyahara of Japan competes. REUTERS/Jean-Paul Pelissier

Figure Skating - ISU Grand Prix of Figure Skating Final 2016/2017 - Ladies Free Skating - Marseille, France - 10/12/16 - Satoko Miyahara of Japan competes. REUTERS/Jean-Paul Pelissier

Figure Skating - ISU Grand Prix of Figure Skating Final 2016/2017 - Ladies Free Skating - Marseille, France - 10/12/16 - Satoko Miyahara of Japan competes. REUTERS/Jean-Paul Pelissier

Figure Skating - ISU Grand Prix of Figure Skating Final 2016/2017 - Ladies Free Skating - Marseille, France - 10/12/16 - Kaetlyn Osmond of Canada competes. REUTERS/Jean-Paul Pelissier

Figure Skating - ISU Grand Prix of Figure Skating Final 2016/2017 - Ladies Free Skating - Marseille, France - 10/12/16 - Kaetlyn Osmond of Canada competes. REUTERS/Jean-Paul Pelissier

Figure Skating - ISU Grand Prix of Figure Skating Final 2016/2017 - Ladies Free Skating - Marseille, France - 10/12/16 - Kaetlyn Osmond of Canada competes. REUTERS/Jean-Paul Pelissier

Figure Skating - ISU Grand Prix of Figure Skating Final 2016/2017 - Ladies Free Skating - Marseille, France - 10/12/16 - Kaetlyn Osmond of Canada competes. REUTERS/Jean-Paul Pelissier

Figure Skating - ISU Grand Prix of Figure Skating Final 2016/2017 - Ladies Free Skating - Marseille, France - 10/12/16 - Anna Pogorilaya of Russia competes. REUTERS/Jean-Paul Pelissier