Stefanos Tsitsipas of Greece holds up the trophy and celebrates as confetti falls after defeating Austria's Dominic Thiem in the final of the ATP World Finals tennis match at the O2 arena in London, Sunday, November 17, 2019. (Photo by Kirsty Wigglesworth/AP Photo)





Fencer Lee Kiefer poses for a portrait during the Team USA Tokyo 2020 Olympics shoot on November 20, 2019 in West Hollywood, California. (Photo by Harry How/Getty Images)





Quarterback Mason Rudolph #2 of the Pittsburgh Steelers fights with defensive end Myles Garrett #95 of the Cleveland Browns during the second half at FirstEnergy Stadium on November 14, 2019 in Cleveland, Ohio. The Browns defeated the Steelers 21-7. (Photo by Jason Miller/Getty Images)





Colin Kaepernick puts his hand over his heart in response to a comment at a special training event at Charles. R. Drew High School in Riverdale, Georgia, November 16, 2019. (Photo by Elijah Nouvelage/Reuters)





Maya Nakanishi of Japan competes en route to winning the women's T64 long jump at the World Para Athletics Championships in Dubai on November 11, 2019. (Photo by Christopher Pike/Reuters)





Houston Texans wide receiver DeAndre Hopkins (10) celebrates his touchdown catch against the Indianapolis Colts with teammate Will Fuller (15) during the first half of an NFL football game Thursday, November 21, 2019, in Houston. (Photo by David J. Phillip/AP Photo)





Serbia's Novak Djokovic returns the ball to Russia's Karen Khachanov during their Davis Cup tennis match in Madrid, Spain, Friday, November 22, 2019. (Photo by Bernat Armangue/AP Photo)





Russia's Andrey Rublev celebrates after winning the Davis Cup quarterfinal doubles match against Serbia's Novak Djokovic and Viktor Troicki in Madrid, Spain, Friday, November 22, 2019. (Photo by Bernat Armangue/AP Photo)





United States' Mikaela Shiffrin feeds a reindeer during the podium ceremony after winning an alpine ski, women's slalom in Levi, Finland, Saturday, November 23, 2019. (Photo by Alessandro Trovati/AP Photo)





Supporters of Brazil's President Jair Bolsonaro gesture during the launch of a new political party, the Alliance for Brazil (APB) in Brasilia, Brazil on November 21, 2019. (Photo by Ueslei Marcelino/Reuters)





General view of Callum Smith holding the WBA Super World, WBC Diamond and Ring Magazine Super Middle Weight belts during the press conference at the Cunard Building, Liverpool, Britain on November 21, 2019.(Photo by Jason Cairnduff/Action Images via Reuters)





A surfer drops in on a large wave at Praia do Norte in Nazare, Portugal on November 20, 2019. (Photo by Rafael Marchante/Reuters)





Moto3 rider Lorenzo Dalla Porta of Italy slides on the gravel after crashing during the Valencia Motorcycle Grand Prix, the last race of the season, at the Ricardo Tormo circuit in Cheste, near Valencia, Spain, Sunday, November 17, 2019. (Photo by Alberto Saiz/AP Photo)





New York Islanders' Jordan Eberle (7) scores a goal past Philadelphia Flyers' Brian Elliott (37) during a shootout in an NHL hockey game, Saturday, November 16, 2019, in Philadelphia. New York won 4-3. (Photo by Matt Slocum/AP Photo)





Children watch Mariah Bell of the United States perform her ladies free skating routine at the ISU Grand Prix of Figure Skating- Rostelecom Cup in Moscow, Russia, Saturday, November 16, 2019. (Photo by Alexander Zemlianichenko/AP Photo)





Stefanos Tsitsipas of Greece drops his racquet and drops to the ground as he wins and defeats Austria's Dominic Thiem their ATP World Finals singles final tennis match at the O2 arena in London, Sunday, November 17, 2019. (Photo by Alberto Pezzali/AP Photo)





Fans of the Kansas City Chiefs pose for photos before the game against the Los Angeles Chargers at Estadio Azteca on November 18, 2019 in Mexico City, Mexico. (Photo by Manuel Velasquez/Getty Images)