Joel Embiid, a center for the NBA's Philadelphia 76ers, dives into the crowd to keep a ball in play against Brooklyn on Sunday, December 18. John Geliebter/USA TODAY Sports

Cleveland quarterback Robert Griffin III runs for a second-half touchdown during an NFL game at Buffalo on Sunday, December 18. Cleveland still lost 33-13, however, and fell to 0-14 on the season. Kevin Hoffman/USA TODAY Sports

Real Madrid goalkeeper Keylor Navas collides with teammate Sergio Ramos, bottom, and Kashima Antlers midfielder Fabricio during the final of the FIFA Club World Cup on Sunday, December 18. Madrid won 4-2 in Yokohama, Japan. KIMIMASA MAYAMA/EPA

Greg Whittington collects a rebound for the Sydney Kings during an NBL game against Adelaide on Sunday, December 18. Mark Kolbe/Getty Images

Alexei Papin, right, swings at Israel Duffus during their cruiserweight bout in Yekaterinburg, Russia, on Saturday, December 17. Valery Sharifulin/TASS/Getty Images

West Virginia basketball players celebrate a home victory against Missouri-Kansas City on Saturday, December 17. It was the 800th career victory for head coach Bob Huggins -- one of just 10 coaches to achieve the milestone. Ben Queen/USA TODAY Sports

Alex Botelho surfs during a big-wave session in Nazare, Portugal, on Saturday, December 17. Lars Baron/Getty Images

Pakistan wicketkeeper Sarfraz Ahmed eyes the ball during a Test match in Australia on Saturday, December 17. SAEED KHAN/AFP/Getty Images

Canadian skier Erik Guay trains Wednesday, December 14, before a World Cup event in Val Gardena, Italy. Erich Spiess/ASP/Red Bull Content Pool

Portland's Allen Crabbe is fouled by Golden State's Draymond Green during an NBA game in Oakland, California, on Saturday, December 17. Marcio Jose Sanchez/AP

Dallas running back Ezekiel Elliott celebrates a touchdown by jumping into a big Salvation Army kettle on Sunday, December 18. Elliott rushed for a career-high 159 yards as the Cowboys beat Tampa Bay 26-20. Tom Pennington/Getty Images

People in Minsk, Belarus, compete in the Belarusian winter-swimming championship on Saturday, December 17. TATYANA ZENKOVICH/EPA

Florida's Dylan McIlrath, left, and Minnesota's Chris Stewart brawl during an NHL game in St. Paul, Minnesota, on Tuesday, December 13. Stacy Bengs/AP

Japanese players hold up Hosiko Temma after defeating Korea to win an under-12 baseball tournament in Zhongshan, China, on Tuesday, December 13. Dave Zhong/Samurai Japan/Getty Images

Minnesota wide receiver Adam Thielen, left, is unable to catch a pass as he's hit by Indianapolis cornerback Darius Butler on Sunday, December 18. Butler got a penalty for unnecessary roughness. Charlie Neibergall/AP

The Milwaukee Bucks wear loud shirts in honor of broadcaster Craig Sager, who died Thursday, December 15, after battling acute myeloid leukemia. Sager, a Turner Sports sideline reporter best known for his colorful wardrobe, was 65. Benny Sieu/USA TODAY Sports

Okelsandr Usyk boxes Thabiso Mchunu during a cruiserweight title fight in Los Angeles on Saturday, December 17. Usyk defended his WBO belt with a ninth-round stoppage. Jayne Kamin-Oncea/USA TODAY Sports

The temperature at kickoff was 1 degree Fahrenheit as the Kansas City Chiefs hosted the Tennessee Titans on Sunday, December 18. Reed Hoffmann/Getty Images

Chile's Seguel Clemente, front, competes in the Youth Sailing World Championships on Friday, December 16. The event is taking place in Auckland, New Zealand, through December 20. Phil Walter/Getty Images

Chinese badminton players Chen Qingchen and Jia Yifan celebrate Sunday, December 18, after winning the Super Series doubles final in Dubai, United Arab Emirates. Francois Nel/Getty Images

North Carolina Central defensive back Jaquell Taylor, left, breaks up a pass intended for Grambling's Devohn Lindsey during the Celebration Bowl in Atlanta on Saturday, December 17. Brett Davis/USA TODAY Sports

Cardiff City's Aron Gunnarsson meets a cross Tuesday, December 13, during a league match against Wolverhampton in Cardiff, Wales. Stu Forster/Getty Images

Ohio State basketball player JaQuan Lyle replaces a contact lens during a game against UCLA on Saturday, December 17. John Locher/AP

Murtaza Ahmadi, the Afghan boy who gained online fame after a picture of him wearing a makeshift Lionel Messi jersey went viral, poses with Messi and the rest of the Barcelona starting 11 before a match in Doha, Qatar, on Tuesday, December 13. Barcelona was playing a friendly match against Saudi champions Al-Ahli. KARIM JAAFAR/AFP/Getty Images

Seattle tight end Luke Willson scores a touchdown during the Seahawks' 24-3 win over Los Angeles on Thursday, December 15. The Seahawks clinched the NFC West with the victory. Otto Greule Jr/Getty Images

French biathlete Martin Fourcade competes in a 10-kilometer (6.2-mile) sprint during a World Cup event in Nove Mesto, Czech Republic, on Thursday, December 15. Fourcade won the race. MICHAL CIZEK/AFP/Getty Images

Jacksonville wide receiver Marqise Lee tries to pull in a pass during an NFL game at Houston on Sunday, December 18. Troy Taormina/USA TODAY Sports