Speed Skating - Pyeongchang 2018 Winter Olympics - Men's 1000m competition finals - Gangneung Oval - Gangneung, South Korea - February 23, 2018 - Shani Davis of the U.S. reacts after his race. REUTERS/Damir Sagolj

Speed Skating - Pyeongchang 2018 Winter Olympics - Men's 1000m competition finals - Gangneung Oval - Gangneung, South Korea - February 23, 2018 - Takuro Oda of Japan and Shani Davis of the U.S. compete. REUTERS/Damir Sagolj

Speed Skating - Pyeongchang 2018 Winter Olympics - Men's 1000m competition finals - Gangneung Oval - Gangneung, South Korea - February 23, 2018 - Shani Davis of the U.S. competes. REUTERS/Damir Sagolj

Speed Skating - Pyeongchang 2018 Winter Olympics - Men's 1000m competition finals - Gangneung Oval - Gangneung, South Korea - February 23, 2018 - Takuro Oda of Japan and Shani Davis of the U.S. compete. REUTERS/Damir Sagolj

Speed Skating - Pyeongchang 2018 Winter Olympics - Men's 1000m competition finals - Gangneung Oval - Gangneung, South Korea - February 23, 2018 - Shani Davis of the U.S. competes. REUTERS/Damir Sagolj

Speed Skating – Pyeongchang 2018 Winter Olympics – Men’s 1500m competition finals – Gangneung Oval - Gangneung, South Korea – February 13, 2018 - Shani Davis of the U.S. competes. REUTERS/Jorge Silva

Speed Skating – Pyeongchang 2018 Winter Olympics – Men’s 1500m competition finals – Gangneung Oval - Gangneung, South Korea – February 13, 2018 - Shani Davis of the U.S. and Bart Swings of Belgium compete. REUTERS/Phil Noble

Speed Skating – Pyeongchang 2018 Winter Olympics – Men’s 1500m competition finals – Gangneung Oval - Gangneung, South Korea – February 13, 2018 - Shani Davis of the U.S. competes. REUTERS/Jorge Silva

Speed Skating – Pyeongchang 2018 Winter Olympics – Men’s 1500m competition finals – Gangneung Oval - Gangneung, South Korea – February 13, 2018 - Shani Davis of the U.S. reacts. REUTERS/Phil Noble

Speed Skating – Pyeongchang 2018 Winter Olympics – Men’s 1500m competition finals – Gangneung Oval - Gangneung, South Korea – February 13, 2018 - Shani Davis of the U.S. competes. REUTERS/Phil Noble

Speed Skating – Pyeongchang 2018 Winter Olympics – Men’s 1500m competition finals – Gangneung Oval - Gangneung, South Korea – February 13, 2018 - Shani Davis of the U.S. competes. REUTERS/Phil Noble

Speed Skating - Pyeongchang 2018 Winter Olympics - Training - Gangneung Oval, Gangneung, South Korea - February 12, 2018. Shani Davis of the U.S. during training. REUTERS/Phil Noble

Speed Skating - Pyeongchang 2018 Winter Olympics - Training - Gangneung Oval, Gangneung, South Korea - February 10, 2018. Shani Davis of the U.S. is seen during training. REUTERS/Phil Noble

Speed Skating – ISU World Sprint Speed Skating Championship – Men’s 1000m race – Seoul, South Korea – 27/02/16 – Shani Davis of the U.S. competes. REUTERS/Kim Hong-Ji

Shani Davis of the U.S. skates during the men's 1500m event at the ISU World Cup speed skating competition in Heerenveen December 14, 2014. REUTERS/Michael Kooren (NETHERLANDS - Tags: SPORT SPEED SKATING)

Shani Davis of the U.S. skates during the men's 1000m event at the ISU World Cup speed skating competition in Heerenveen December 13, 2014. REUTERS/Michael Kooren (NETHERLANDS - Tags: SPORT SPEED SKATING)

Shani Davis of the U.S. skates during the men's 1000m event at the ISU World Cup speed skating competition in Heerenveen December 13, 2014. REUTERS/Michael Kooren (NETHERLANDS - Tags: SPORT SPEED SKATING)

Shani Davis of the U.S. (L) and Stefan Groothuis of the Netherlands skates during the men's 1000m event at the ISU World Cup speed skating competition in Heerenveen December 13, 2014. REUTERS/Michael Kooren (NETHERLANDS - Tags: SPORT SPEED SKATING)

Shani Davis (R-L), Brian Hansen and Jonathan Kuck of the U.S. team compete during their men's speed skating team pursuit quarter-finals event at the Adler Arena in the Sochi 2014 Winter Olympic Games February 21, 2014. REUTERS/Phil Noble (RUSSIA - Tags: OLYMPICS SPORT SPEED SKATING)

Shani Davis of the U.S. leads Brian Hansen and Jonathan Kuck of the U.S. in the men's speed skating team pursuit quarter-finals during the 2014 Sochi Winter Olympics, February 21, 2014. REUTERS/Marko Djurica (RUSSIA - Tags: OLYMPICS SPORT SPEED SKATING)

Shani Davis of the U.S. leads Brian Hansen and Jonathan Kuck of the U.S. in the men's speed skating team pursuit quarter-finals during the 2014 Sochi Winter Olympics, February 21, 2014. REUTERS/Phil Noble (RUSSIA - Tags: OLYMPICS SPORT SPEED SKATING)

U.S. skaters Kuck Jonathan (L-R), Hansen Brian, and Davis Shani compete during their men's speed skating team pursuit quarter-finals event at the Adler Arena in the Sochi 2014 Winter Olympic Games February 21, 2014. REUTERS/Issei Kato (RUSSIA - Tags: OLYMPICS SPORT SPEED SKATING)

Shani Davis of the U.S. competes in the men's 1,500 metres speed skating competition at the 2014 Sochi Winter Olympics, February 15, 2014. REUTERS/Marko Djurica (RUSSIA - Tags: OLYMPICS SPORT SPEED SKATING)

Zbigniew Brodka of Poland (R) and Shani Davis of the U.S. compete in the men's 1,500 metres speed skating race during the 2014 Sochi Winter Olympics, February 15, 2014. REUTERS/Marko Djurica (RUSSIA - Tags: OLYMPICS SPORT SPEED SKATING TPX IMAGES OF THE DAY)

Shani Davis of the U.S. waves before competing in the men's 1,500 metres speed skating race during the 2014 Sochi Winter Olympics, February 15, 2014.U.S. speed-skaters decided on Friday to drop new, specially designed Under Armour Inc suits that media reports have linked to a dismal showing at the Sochi Games, reverting to apparel worn during recent World Cup events. REUTERS/Issei Kato (RUSSIA - Tags: OLYMPICS SPORT SPEED SKATING)

Poland's Zbigniew Brodka (R) and Shani Davis of the U.S. react after the men's 1,500 metres speed skating race in the Adler Arena at the Sochi 2014 Winter Olympic Games February 15, 2014. REUTERS/Phil Noble (RUSSIA - Tags: OLYMPICS SPORT SPEED SKATING)

Poland's Zbigniew Brodka (R) and Shani Davis of the U.S. react after the men's 1,500 metres speed skating race in the Adler Arena at the Sochi 2014 Winter Olympic Games February 15, 2014. REUTERS/Phil Noble (RUSSIA - Tags: OLYMPICS SPORT SPEED SKATING)

Shani Davis of the U.S. competes in the men's 1,500 metres speed skating race during the 2014 Sochi Winter Olympics, February 15, 2014. REUTERS/Issei Kato (RUSSIA - Tags: OLYMPICS SPORT SPEED SKATING)

Shani Davis of the U.S. reacts after competing in the men's 1,500 metres speed skating race during the 2014 Sochi Winter Olympics, February 15, 2014. REUTERS/Marko Djurica (RUSSIA - Tags: OLYMPICS SPORT SPEED SKATING)

Shani Davis of the U.S. reacts after competing in the men's 1,500 metres speed skating race during the 2014 Sochi Winter Olympics, February 15, 2014. REUTERS/Marko Djurica (RUSSIA - Tags: OLYMPICS SPORT SPEED SKATING)

Shani Davis of the U.S.skates during the men's 1,000 metres speed skating race at the Adler Arena during the 2014 Sochi Winter Olympics February 12, 2014. REUTERS/Issei Kato (RUSSIA - Tags: OLYMPICS SPORT SPEED SKATING)

Shani Davis of the U.S. competes in the men's 1,000 meters speed skating race during the 2014 Sochi Winter Olympics, February 12, 2014. REUTERS/Issei Kato (RUSSIA - Tags: OLYMPICS SPORT SPEED SKATING)

Shani Davis of the U.S. leads Koen Verweij of the Netherlands during the men's 1,000 metres speed skating race at the Adler Arena during the 2014 Sochi Winter Olympics February 12, 2014. REUTERS/Phil Noble (RUSSIA - Tags: OLYMPICS SPORT SPEED SKATING)

Shani Davis of the U.S. looks at his time after competing in the men's 1,000 meters speed skating race during the 2014 Sochi Winter Olympics, February 12, 2014. REUTERS/Phil Noble (RUSSIA - Tags: OLYMPICS SPORT SPEED SKATING TPX IMAGES OF THE DAY)

Mitchell Whitmore of the U.S. (R) and Shani Davis of the U.S. look at their times after their race two of the men's 500 meters speed skating event during the 2014 Sochi Winter Olympics, February 10, 2014. REUTERS/Phil Noble (RUSSIA - Tags: OLYMPICS SPORT SPEED SKATING)

Shani Davis of the U.S. skates during the men's 500 metres speed skating race at the Adler Arena during the 2014 Sochi Winter Olympics February 10, 2014. REUTERS/Marko Djurica (RUSSIA - Tags: OLYMPICS SPORT SPEED SKATING)

Mitchell Whitmore of the U.S. (L) and Shani Davis of the U.S. compete in race two of the men's 500 meters speed skating event during the 2014 Sochi Winter Olympics, February 10, 2014. REUTERS/Laszlo Balogh (RUSSIA - Tags: OLYMPICS SPORT SPEED SKATING)

Shani Davis of the U.S. skates during the men's 500 metres speed skating race at the Adler Arena during the 2014 Sochi Winter Olympics February 10, 2014. REUTERS/Laszlo Balogh (RUSSIA - Tags: OLYMPICS SPORT SPEED SKATING)

Shani Davis of the U.S. competes in race one of the men's 500 meters speed skating event during the 2014 Sochi Winter Olympics, February 10, 2014. REUTERS/Phil Noble (RUSSIA - Tags: OLYMPICS SPORT SPEED SKATING)

Shani Davis (R) of the U.S. reacts after the men's 1,000m event at the ISU World Sprint Speed Skating Championships in Nagano, central Japan, January 19, 2014. REUTERS/Issei Kato (JAPAN - Tags: SPORT SPEED SKATING)

Shani Davis of the U.S. smiles after the men's 1,000m event at the ISU World Sprint Speed Skating Championships in Nagano, central Japan, January 19, 2014. REUTERS/Issei Kato (JAPAN - Tags: SPORT SPEED SKATING)

Shani Davis of the U.S. races during the men's 1,000m event at the ISU World Sprint Speed Skating Championships in Nagano, central Japan, January 19, 2014. REUTERS/Issei Kato (JAPAN - Tags: SPORT SPEED SKATING)

Michel Mulder (C) of the Netherlands celebrates winning the men's overall World Sprint Speed Skating Championships title with Shani Davis (L) of the U.S. who finished second and Daniel Greig of Australia who finished third, during the awards ceremony in Nagano, central Japan, January 19, 2014. REUTERS/Issei Kato (JAPAN - Tags: SPORT SPEED SKATING)

Shani Davis (R) of the U.S. reacts after the men's 1,000m event during the ISU World Sprint Speed Skating Championships in Nagano, central Japan January 18, 2014. REUTERS/Issei Kato (JAPAN - Tags: SPORT SPEED SKATING)

Shani Davis of the U.S. races during the men's 1,000m event at the ISU World Sprint Speed Skating Championships in Nagano, central Japan January 18, 2014. REUTERS/Issei Kato (JAPAN - Tags: SPORT SPEED SKATING)

Shani Davis of the U.S. races during the men's 1,000m event at the ISU World Sprint Speed Skating Championships in Nagano, central Japan January 18, 2014. REUTERS/Issei Kato (JAPAN - Tags: SPORT SPEED SKATING)

Shani Davis of the U.S. competes during the men's 1000m event at the Essent ISU World Single Distances Championships 2013 in Sochi March 22, 2013. REUTERS/Grigory Dukor (RUSSIA - Tags: SPORT SPEED SKATING)

Shani Davis of the U.S. competes during the men's 1000m event at the Essent ISU World Single Distances Championships 2013 in Sochi March 22, 2013. REUTERS/Grigory Dukor (RUSSIA - Tags: SPORT SPEED SKATING)

Second placed Tae-Bum Mo of South Korea, winner Denis Kuzin of Kazakhstan and Shani Davis of the U.S. (L-R) celebrate on the podium after the men's 1000m event at the Essent ISU World Single Distances Championships 2013 in Sochi March 22, 2013. REUTERS/Grigory Dukor (RUSSIA - Tags: SPORT SPEED SKATING)

Shani Davis of the U.S. competes during the men's 1000m event at the Essent ISU World Single Distances Championships 2013 in Sochi March 22, 2013. REUTERS/Grigory Dukor (RUSSIA - Tags: SPORT SPEED SKATING)

Shani Davis of the U.S. competes during the men's 1000m event at the Essent ISU World Single Distances Championships 2013 in Sochi March 22, 2013. REUTERS/Grigory Dukor (RUSSIA - Tags: SPORT SPEED SKATING)

Second placed Shani Davis of the U.S. winner Denis Yuskov of Russia and third placed compatriot Ivan Skobrev (L-R) react on the podium during the medal ceremony for the men's 1500m speed skating event at the Essent ISU World Single Distances Championships 2013 in Sochi March 21, 2013. REUTERS/Grigory Dukor (RUSSIA - Tags: SPORT SPEED SKATING)

Winner Denis Yuskov of Russia jumps on the podium between second placed Shani Davis of the U.S. (L) and third placed Ivan Skobrev of Russia (R) during the medal ceremony for the men's 1500m speed skating event at the Essent ISU World Single Distances Championships 2013 in Sochi March 21, 2013. REUTERS/Grigory Dukor (RUSSIA - Tags: SPORT SPEED SKATING)

Shani Davis of the U.S. competes during the men's 1500m speed skating event at the Essent ISU World Single Distances Championships 2013 in Sochi March 21, 2013. REUTERS/Grigory Dukor (RUSSIA - Tags: SPORT SPEED SKATING)

Shani Davis of the U.S. reacts after he took the second place at the men's 1500m speed skating event during the Essent ISU World Single Distances Championships 2013 in Sochi March 21, 2013. REUTERS/Grigory Dukor (RUSSIA - Tags: SPORT SPEED SKATING)

Shani Davis of the U.S. competes during the men's 1500m speed skating event at the Essent ISU World Single Distances Championships 2013 in Sochi March 21, 2013. REUTERS/Grigory Dukor (RUSSIA - Tags: SPORT SPEED SKATING)

Shani Davis of the U.S. competes during the men's 1500m event at the Essent ISU speed skating World Cup in Heerenveen, March 10, 2013. REUTERS/Michael Kooren (NETHERLANDS - Tags: SPORT SPEED SKATING)

Zbigniew Brodka of Poland (L), event winner Bart Swings of Belgium (C) and Shani Davis of the U.S. celebrate on the podium during the prize ceremony of the men's 1500m event at the Essent ISU speed skating World Cup in Heerenveen, March 10, 2013. REUTERS/Michael Kooren (NETHERLANDS - Tags: SPORT SPEED SKATING)

Kjeld Nuis of the Netherlands (C) celebrates on the podium with Shani Davis of the U.S. (L) while Hein Otterspeer of the Netherlands looks on during the awards ceremony of the men's 1000m event at the Essent ISU speed skating World Cup in Heerenveen, March 9, 2013. REUTERS/Michael Kooren (NETHERLANDS - Tags: SPORT SPEED SKATING)

Kjeld Nuis of the Netherlands (C) celebrates on the podium with Shani Davis of the U.S. (L) while Hein Otterspeer of the Netherlands looks on during the awards ceremony of the men's 1000m event at the Essent ISU speed skating World Cup in Heerenveen, March 9, 2013. REUTERS/Michael Kooren (NETHERLANDS - Tags: SPORT SPEED SKATING)