Felix Loch competing at the 2010 Vancouver Olympic Winter Games. Copyright : 2010 / GETTY - All rights reserved.

Felix Loch competing at the 2010 Vancouver Olympic Winter Games. Copyright : 2010 / GETTY - All rights reserved.

Felix Loch of Germany celebrates winning the gold medal during the Men's Luge Singles.

Felix Loch of Germany celebrates winning the gold medal during the Men's Luge Singles.

Felix Loch of Germany makes a run during the Luge Men's Singles.

Felix Loch of Germany makes a run during the Luge Men's Singles.

Felix Loch of Germany looks despondent after finishing overall fifth following run 4 during the Luge Men's Singles on Day 2 of the PyeongChang 2018 Winter Olympic Games at Olympic Sliding Centre on February 11, 2018 in Pyeongchang-gun, Republic of Korea.

Sock and shoe detail of Allyson Felix of the United States prior to Women's 400 metres final on Day 10 of the Rio 2016 Olympic Games at the Olympic Stadium on August 15, 2016 in Rio de Janeiro, Brazil.

Shaunae Miller of the Bahamas runs on her way to winning the gold medal in the Women's 400m Final ahead of silver medalist Allyson Felix of the United States (not pictured) on Day 10 of the Rio 2016 Olympic Games at the Olympic Stadium on August 15, 2016 in Rio de Janeiro, Brazil.

Shaunae Miller of the Bahamas runs on her way to winning the gold medal in the Women's 400m Final ahead of silver medalist Allyson Felix of the United States (not pictured) on Day 10 of the Rio 2016 Olympic Games at the Olympic Stadium on August 15, 2016 in Rio de Janeiro, Brazil.