Luge – Pyeongchang 2018 Winter Olympics – Women’s Singles Competition – Olympic Sliding Centre - Pyeongchang, South Korea – February 13, 2018. Tatjana Huefner of Germany and Gold medalist Natalie Geisenberger of Germany. REUTERS/Arnd Wiegmann 

Luge – Pyeongchang 2018 Winter Olympics – Women’s Singles Competition – Olympic Sliding Centre - Pyeongchang, South Korea – February 13, 2018. Tatjana Huefner of Germany reacts after her run. REUTERS/Arnd Wiegmann 

Luge - Pyeongchang 2018 Winter Olympics - Women's Singles competition - Olympic Sliding Centre - Pyeongchang, South Korea - February 13, 2018 - Tatjana Huefner of Germany reacts after her run. REUTERS/Edgar Su 

Luge - Pyeongchang 2018 Winter Olympics - Women's Singles competition - Olympic Sliding Centre - Pyeongchang, South Korea - February 13, 2018 - Tatjana Huefner of Germany walks after her run. REUTERS/Arnd Wiegmann 

Luge - Pyeongchang 2018 Winter Olympics - Women's Singles competition - Olympic Sliding Centre - Pyeongchang, South Korea - February 13, 2018 - Tatjana Huefner of Germany reacts after her run. REUTERS/Edgar Su 

Luge – Pyeongchang 2018 Winter Olympics – Women’s Singles Competition – Olympic Sliding Centre - Pyeongchang, South Korea – February 13, 2018. Tatjana Huefner of Germany in action. REUTERS/Arnd Wiegmann 

Luge – Pyeongchang 2018 Winter Olympics – Women’s Singles Competition – Olympic Sliding Centre - Pyeongchang, South Korea – February 12, 2018 - Tatjana Huefner of Germany in action. REUTERS/Edgar Su 

Luge – Pyeongchang 2018 Winter Olympics – Women’s Singles Competition – Olympic Sliding Centre - Pyeongchang, South Korea – February 12, 2018 - Tatjana Huefner of Germany reacts after her run. REUTERS/Arnd Wiegmann 

Luge – Pyeongchang 2018 Winter Olympics – Women’s Singles Competition – Olympic Sliding Centre - Pyeongchang, South Korea – February 12, 2018 - Tatjana Huefner of Germany reacts after her run. REUTERS/Arnd Wiegmann 

Luge – Pyeongchang 2018 Winter Olympics – Women’s Singles Competition – Olympic Sliding Centre - Pyeongchang, South Korea – February 12, 2018 - Tatjana Huefner of Germany in action. REUTERS/Arnd Wiegmann 

Luge – Pyeongchang 2018 Winter Olympics – Women’s Singles Competition – Olympic Sliding Centre - Pyeongchang, South Korea – February 12, 2018 - Tatjana Huefner of Germany before her run. REUTERS/Edgar Su 

Luge – Pyeongchang 2018 Winter Olympics – Women’s Singles training – Olympic Sliding Centre - Pyeongchang, South Korea – February 11, 2018 - Tatjana Huefner of Germany trains. REUTERS/Edgar Su 

Luge – Pyeongchang 2018 Winter Olympics – Women’s Singles training – Olympic Sliding Centre - Pyeongchang, South Korea – February 10, 2018 - Germany's President Frank-Walter Steinmeier, his wife Elke Buedenbender and Alfons Hoermann, president of the German Olympic Sports Federation, meet Natalie Geisenberger of Germany, Dajana Eitberger of Germany and Tatjana Huefner of Germany. REUTERS/Arnd Wiegmann 

Luge – Pyeongchang 2018 Winter Olympics – Women’s Singles training – Olympic Sliding Centre - Pyeongchang, South Korea – February 10, 2018 - Germany's President Frank-Walter Steinmeier meets Dajana Eitberger of Germany and Tatjana Huefner of Germany. REUTERS/Arnd Wiegmann 

Luge – Pyeongchang 2018 Winter Olympics – Women’s Singles training – Olympic Sliding Centre - Pyeongchang, South Korea – February 10, 2018 - Germany's President Frank-Walter Steinmeier, his wife Elke Buedenbender, Alfons Hoermann (L), president of the German Olympic Sports Federation, and Thomas Schwab (R), chairman of the German Bobsleigh and Luge Federation (BSD), meet Natalie Geisenberger of Germany, Dajana Eitberger of Germany and Tatjana Huefner of Germany. REUTERS/Arnd Wiegmann 

Luge – Pyeongchang 2018 Winter Olympics – Women’s Singles training – Olympic Sliding Centre - Pyeongchang, South Korea – February 10, 2018 - Tatjana Huefner of Germany gives a thumbs up after finishing her run. REUTERS/Arnd Wiegmann 

Luge - FIL World Luge Championships - Team Relay - Innsbruck, Austria - 29/01/17 - Tatjana Huefner, Johannes Ludwig, Toni Eggert and Sascha Benecken of Germany celebrate at the finish. REUTERS/Dominic Ebenbichler

Luge - FIL World Luge Championships - Team Relay - Innsbruck, Austria - 29/01/17 - Tatjana Huefner, Johannes Ludwig, Toni Eggert and Sascha Benecken of Germany celebrate at the finish. REUTERS/Dominic Ebenbichler

Luge - FIL World Luge Championships - Team Relay - Innsbruck, Austria - 29/01/17 - Tatjana Huefner, Johannes Ludwig, Toni Eggert and Sascha Benecken of Germany celebrate at the finish. REUTERS/Dominic Ebenbichler TPX IMAGES OF THE DAY 

Luge - FIL World Luge Championships - Team Relay - Innsbruck, Austria - 29/01/17 - Tatjana Huefner, Johannes Ludwig, Toni Eggert and Sascha Benecken of Germany celebrate at the finish. REUTERS/Dominic Ebenbichler 

Luge - FIL World Luge Championships - Women's Race - Innsbruck, Austria - 28/01/17 - Erin Hamlin of the U.S., Tatjana Huefner of Germany and Kimberley McRae of Canada pose on the podium. REUTERS/Dominic Ebenbichler 

Luge - FIL World Luge Championships - Women's Race - Innsbruck, Austria - 28/01/17 - Tatjana Huefner of Germany reacts at the finish. REUTERS/Dominic Ebenbichler 

Luge - FIL World Luge Championships - Women's Race - Innsbruck, Austria - 28/01/17 - Tatjana Huefner of Germany reacts at the finish. REUTERS/Dominic Ebenbichler 

Luge - FIL World Luge Championships - Women's Race - Innsbruck, Austria - 28/01/17 - Tatjana Huefner of Germany celebrates at the finish. REUTERS/Dominic Ebenbichler 

Luge - FIL World Luge Championships - Women's Race - Innsbruck, Austria - 28/01/17 - Tatjana Huefner of Germany celebrates at the finish. REUTERS/Dominic Ebenbichler 

Luge - FIL World Luge Championships - Women's Race - Innsbruck, Austria - 28/01/17 - Tatjana Huefner of Germany competes. REUTERS/Dominic Ebenbichler 

Luge - FIL World Luge Championships - Women's Sprint Race - Innsbruck, Austria - 27/01/17 - Third placed Tatjana Huefner of Germany on podium. REUTERS/Dominic Ebenbichler

Luge - FIL World Luge Championships - Women's Sprint Race - Innsbruck, Austria - 27/01/17 - Martina Kocher of Switzerland, Erin Hamlin of the U.S. and Tatjana Huefner of Germany pose with their medals on the podium. REUTERS/Dominic Ebenbichler

Luge - FIL World Luge Championships - Women's Sprint Race - Innsbruck, Austria - 27/01/17 - Third placed Tatjana Huefner of Germany on podium. REUTERS/Dominic Ebenbichler

Luge - FIL World Luge Championships - Women's Sprint Race - Innsbruck, Austria - 27/01/17 - Martina Kocher of Switzerland, Erin Hamlin of the U.S. and Tatjana Huefner of Germany react at the finish. REUTERS/Dominic Ebenbichler

Luge - FIL World Luge Championships - Women's Sprint Race - Innsbruck, Austria - 27/01/17 - Tatjana Huefner of Germany reacts at the finish. REUTERS/Dominic Ebenbichler

Gold medalist Germany's Natalie Geisenberger (C), silver medalist Germany's Tatjana Huefner, and bronze medalist Erin Hamlin of the U.S. (R) celebrate during the medal ceremony for the women's singles luge event at the 2014 Sochi Winter Olympics February 12, 2014. REUTERS/Eric Gaillard (RUSSIA - Tags: OLYMPICS SPORT LUGE)

Gold medalist Germany's Natalie Geisenberger (C), silver medalist Germany's Tatjana Huefner, and bronze medalist Erin Hamlin of the U.S. (R) celebrate during the medal ceremony for the women's singles luge event at the 2014 Sochi Winter Olympics February 12, 2014. REUTERS/Gary Hershorn (RUSSIA - Tags: OLYMPICS SPORT LUGE)

Gold medalist Germany's Natalie Geisenberger (C), silver medalist Germany's Tatjana Huefner, and bronze medalist Erin Hamlin of the U.S. (R) celebrate during the medal ceremony for the women's singles luge event at the 2014 Sochi Winter Olympics February 12, 2014. REUTERS/Gary Hershorn (RUSSIA - Tags: OLYMPICS SPORT LUGE)

Gold medalist Germany's Natalie Geisenberger (C), silver medalist Germany's Tatjana Huefner, and bronze medalist Erin Hamlin of the U.S. (R) celebrate during the medal ceremony for the women's singles luge event at the 2014 Sochi Winter Olympics February 12, 2014. REUTERS/Gary Hershorn (RUSSIA - Tags: OLYMPICS SPORT LUGE)

Gold medalist Germany's Natalie Geisenberger (C), silver medalist Germany's Tatjana Huefner, and bronze medalist Erin Hamlin of the U.S. (R) celebrate during the medal ceremony for the women's singles luge event at the 2014 Sochi Winter Olympics February 12, 2014. REUTERS/Gary Hershorn (RUSSIA - Tags: OLYMPICS SPORT LUGE)

Gold medalist Germany's Natalie Geisenberger (C), silver medalist Germany's Tatjana Huefner, and bronze medalist Erin Hamlin of the U.S. (R) pose during the medal ceremony for the women's singles luge event at the 2014 Sochi Winter Olympics February 12, 2014. REUTERS/Gary Hershorn (RUSSIA - Tags: OLYMPICS SPORT LUGE)

Gold medalist Germany's Natalie Geisenberger (C), silver medalist Germany's Tatjana Huefner, and bronze medalist Erin Hamlin of the U.S. (R) pose during the medal ceremony for the women's singles luge event at the 2014 Sochi Winter Olympics February 12, 2014. REUTERS/Gary Hershorn (RUSSIA - Tags: OLYMPICS SPORT LUGE)

Gold medalist Germany's Natalie Geisenberger (C), silver medalist Germany's Tatjana Huefner, and bronze medalist Erin Hamlin of the U.S. (R) celebrate during the medal ceremony for the women's singles luge event at the 2014 Sochi Winter Olympics February 12, 2014. REUTERS/Eric Gaillard (RUSSIA - Tags: OLYMPICS SPORT LUGE)

Gold medalist Germany's Natalie Geisenberger (R) and silver medalist Germany's Tatjana Huefner celebrate during the medal ceremony for the women's singles luge event at the 2014 Sochi Winter Olympics February 12, 2014. REUTERS/Eric Gaillard (RUSSIA - Tags: OLYMPICS SPORT LUGE)

Silver medalist Germany's Tatjana Huefner poses during the medal ceremony for the women's singles luge event at the 2014 Sochi Winter Olympics February 12, 2014. REUTERS/Shamil Zhumatov (RUSSIA - Tags: OLYMPICS SPORT LUGE)

Silver medalist Germany's Tatjana Huefner poses during the medal ceremony for the women's singles luge event at the 2014 Sochi Winter Olympics February 12, 2014. REUTERS/Shamil Zhumatov (RUSSIA - Tags: OLYMPICS SPORT LUGE)

Gold medalist Germany's Natalie Geisenberger (C) and silver medalist Germany's Tatjana Huefner celebrate during the medal ceremony for the women's singles luge event at the 2014 Sochi Winter Olympics February 12, 2014. REUTERS/Shamil Zhumatov (RUSSIA - Tags: OLYMPICS SPORT LUGE)

Winner Germany's Natalie Geisenberger (R) and second-placed compatriot Tatjana Huefner raise their national flags after the women's singles luge event at the 2014 Sochi Winter Olympics, at the Sanki Sliding Center in Rosa Khutor February 11, 2014. REUTERS/Arnd Wiegmann (RUSSIA - Tags: SPORT LUGE OLYMPICS)

Winner Germany's Natalie Geisenberger (R) and second-placed compatriot Tatjana Huefner celebrate with their bouquets at the flower ceremony for the women's luge singles competition during the 2014 Sochi Winter Olympics, February 11, 2014. REUTERS/Fabrizio Bensch (RUSSIA - Tags: SPORT LUGE OLYMPICS)

Winner Germany's Natalie Geisenberger (C), second-placed compatriot Tatjana Huefner (L) and Erin Hamlin of the U.S. celebrate on a podium after the women's singles luge event at the 2014 Sochi Winter Olympics, at the Sanki Sliding Center in Rosa Khutor February 11, 2014. REUTERS/Arnd Wiegmann (RUSSIA - Tags: SPORT LUGE OLYMPICS)

Second-placed Germany's Tatjana Huefner celebrates at the flower ceremony for the women's luge singles competition during the 2014 Sochi Winter Olympics, February 11, 2014. REUTERS/Arnd Wiegmann (RUSSIA - Tags: SPORT LUGE OLYMPICS TPX IMAGES OF THE DAY)

Second-placed Germany's Tatjana Huefner celebrates at the flower ceremony for the women's luge singles competition during the 2014 Sochi Winter Olympics, February 11, 2014. REUTERS/Arnd Wiegmann (RUSSIA - Tags: SPORT LUGE OLYMPICS)

Winner Germany's Natalie Geisenberger (C), second-placed compatriot Tatjana Huefner (L) and Erin Hamlin of the U.S. celebrate after the women's singles luge event at the 2014 Sochi Winter Olympics, at the Sanki Sliding Center in Rosa Khutor February 11, 2014. REUTERS/Arnd Wiegmann (RUSSIA - Tags: SPORT LUGE OLYMPICS)

Winner Germany's Natalie Geisenberger (C) and second-placed compatriot Tatjana Huefner celebrate after the women's singles luge event at the 2014 Sochi Winter Olympics, at the Sanki Sliding Center in Rosa Khutor February 11, 2014. REUTERS/Fabrizio Bensch (RUSSIA - Tags: SPORT LUGE OLYMPICS)

Winner Germany's Natalie Geisenberger (C), second-placed compatriot Tatjana Huefner (L) and Erin Hamlin of the U.S. celebrate after the women's singles luge event at the 2014 Sochi Winter Olympics, at the Sanki Sliding Center in Rosa Khutor February 11, 2014. REUTERS/Fabrizio Bensch (RUSSIA - Tags: SPORT LUGE OLYMPICS)

Germany's Tatjana Huefner speeds down the track during the final run in the women's singles luge event at the 2014 Sochi Winter Olympics, at the Sanki Sliding Center in Rosa Khutor February 11, 2014. REUTERS/Murad Sezer (RUSSIA - Tags: SPORT LUGE OLYMPICS)

Second-placed Germany's Tatjana Huefner celebrates with coach Norbert Loch after the final run in the women's singles luge event at the 2014 Sochi Winter Olympics, at the Sanki Sliding Center in Rosa Khutor February 11, 2014. REUTERS/Arnd Wiegmann (RUSSIA - Tags: SPORT LUGE OLYMPICS TPX IMAGES OF THE DAY)

Winner Germany's Natalie Geisenberger (C), second-placed compatriot Tatjana Huefner (L) and Erin Hamlin of the U.S. raise their counties' flags after the women's singles luge event at the 2014 Sochi Winter Olympics, at the Sanki Sliding Center in Rosa Khutor February 11, 2014. REUTERS/Fabrizio Bensch (RUSSIA - Tags: SPORT LUGE OLYMPICS)

Winner Germany's Natalie Geisenberger (R) and second-placed compatriot Tatjana Huefner celebrate with their national flag after the women's luge singles competition during the 2014 Sochi Winter Olympics, February 11, 2014. REUTERS/Fabrizio Bensch (RUSSIA - Tags: SPORT LUGE OLYMPICS)

Winner Germany's Natalie Geisenberger (R) and second-placed compatriot Tatjana Huefner celebrate with their national flag after the women's luge singles competition during the 2014 Sochi Winter Olympics, February 11, 2014. REUTERS/Fabrizio Bensch (RUSSIA - Tags: SPORT LUGE OLYMPICS TPX IMAGES OF THE DAY)

Germany's Tatjana Huefner reacts after completing the final run in the women's singles luge event at the 2014 Sochi Winter Olympics, at the Sanki Sliding Center in Rosa Khutor February 11, 2014. REUTERS/Arnd Wiegmann (RUSSIA - Tags: SPORT LUGE OLYMPICS)

Germany's Tatjana Huefner raises a flag after the final run in the women's singles luge event at the 2014 Sochi Winter Olympics, at the Sanki Sliding Center in Rosa Khutor February 11, 2014. REUTERS/Fabrizio Bensch (RUSSIA - Tags: SPORT LUGE OLYMPICS)

Germany's Tatjana Huefner speeds down the track while competing in the women's luge singles event during the 2014 Sochi Winter Olympics, February 11, 2014. REUTERS/Murad Sezer (RUSSIA - Tags: SPORT LUGE OLYMPICS TPX IMAGES OF THE DAY)

Germany's Tatjana Huefner waves at the women's luge singles competition during the 2014 Sochi Winter Olympics, February 11, 2014. REUTERS/Arnd Wiegmann (RUSSIA - Tags: SPORT LUGE OLYMPICS)