A German bobsled team, piloted by Francesco Friedrich, competes at the World Championships in Konigssee, Germany, on Sunday, February 26. It tied for gold with another German team. Alexander Hassenstein/Bongarts/Getty Images

Horses race at the Meydan track in Dubai, United Arab Emirates, on Thursday, February 23. Francois Nel/Getty Images

NASCAR driver Kurt Busch celebrates after winning the season-opening Daytona 500 on Sunday, February 26. It was the first Daytona 500 victory for Busch, a veteran driver who won the Cup Series title in 2004. Terry Renna/AP

Pro golfer Luke Donald is chased by an Egyptian goose during the second round of the Honda Classic on Friday, February 24. Egyptian geese are common at the PGA National golf course in Palm Beach Gardens, Florida. Jason Getz/USA TODAY Sports

Jacqueline Lolling, a German skeleton racer, speeds down the track during the World Championships in Konigssee, Germany, on Saturday, February 25. The 22-year-old finished in first to become the sport's youngest-ever female world champion. Alexander Hassenstein/Bongarts/Getty Images

Xavier guard Trevon Bluiett tries to evade Seton Hall defenders during a Big East basketball game in Newark, New Jersey, on Wednesday, February 22. Vincent Carchietta/USA TODAY Sports

Young wakeboarder Jett Ellis competes in the 10-14 age group during a state competition in Sydney on Sunday, February 26. Cameron Spencer/Getty Images

Players collide during an Australian Football League match between the Richmond Tigers and the Adelaide Crows on Friday, February 24. Michael Dodge/Getty Images

American cross-country skier Jessica Diggins edges Sweden's Stina Nilsson for third place during a team event at the World Championships on Sunday, February 26. Matthias Hangst/Getty Images

Manchester United captain Wayne Rooney lifts the EFL Cup after a 3-2 victory over Southampton on Sunday, February 26. The annual competition involves the 92 clubs in England's soccer pyramid. Nick Potts/PA Images/Getty Images

Thomaz Bellucci celebrates after he defeated top-seeded Kei Nishikori at the Rio Open in Brazil on Tuesday, February 21. Felipe Dana/AP

Texas' Jurickson Profar slides past Kansas City catcher Cam Gallagher during a spring-training game in Surprise, Arizona, on Sunday, February 26. John Sleezer/TNS/Newscom

Colorado goalie Jeremy Smith makes a save on Buffalo's Brian Gionta during an NHL game in Denver on Saturday, February 25. Smith earned the first win of his career as the Avalanche defeated the Sabres 5-3. Michael Martin/NHLI/Getty Images

Golden State's Stephen Curry drives past Los Angeles Clippers forward Blake Griffin during an NBA game in Oakland, California, on Thursday, February 23. Ben Margot/AP

Paddy Brennan and his horse, Global Stage, fall at the last obstacle during a race in Warwick, England, on Friday, February 24. Alan Crowhurst/Getty Images

Gymnasts practice at a World Cup event in Melbourne on Tuesday, February 21. Quinn Rooney/Getty Images

The Brisbane Lions celebrate Jordan Membrey's goal during an Australian Football League match against Greater Western Sydney on Saturday, February 25. Brisbane won by 34 points. Jason O'Brien/Getty Images

Judges watch Italian ski jumper Alessandro Pittin during the World Championships in Lahti, Finland, on Sunday, February 26. Matthias Schrader/AP

Japan's Yusuke Morozumi throws the stone during the curling final of the Asian Winter Games on Friday, February 24. China won the final 11-4. Shuji Kajiyama/AP

South Korean skier Kim Hyeon-tae celebrates after his second-place slalom finish at the Asian Winter Games on Saturday, February 25. Matt Roberts/Getty Images

Dortmund's Ousmane Dembele performs an overhead kick during a German league match against Freiburg on Saturday, February 25. Michael Kienzler/Bongarts/Getty Images

Milwaukee star Giannis Antetokounmpo eludes Utah defenders during an NBA game in Milwaukee on Friday, February 24. Benny Sieu/AP

NASCAR driver Matt Crafton goes airborne during a wreck in the Truck Series race in Daytona Beach, Florida, on Friday, February 24. The vehicle landed on its wheels and Crafton was unhurt. John David Mercer/USA TODAY Sports

Ohio State guard Asia Doss drives to the basket during a Big Ten game at Rutgers on Sunday, February 26. Mel Evans/AP

Lee Yong-dae plays a shot during a badminton match in Surabaya, Indonesia, on Sunday, February 26. Robertus Pudyanto/Getty Images

Slovenian skier Ilka Stuhec makes a turn during a World Cup super-G race in Crans-Montana, Switzerland, on Saturday, February 25. She finished in first place. FABRICE COFFRINI/AFP/Getty Images

An overhead view shows Formula One driver Valtteri Bottas and Mercedes' 2017 car on Thursday, February 23. Bottas is replacing Nico Rosberg, who retired after winning last season's title. OLI SCARFF/AFP/Getty Images

Los Angeles center Trevor Lewis falls as he tries to pass the puck during an NHL game against Boston on Thursday, February 23. Mark J. Terrill/AP

Lizzie Welborn swims during an Ironman triathlon in Sydney on Friday, February 24. Ryan Pierse/Getty Images

Roger Federer plays a forehand Monday, February 27, during a match in Dubai, United Arab Emirates. Tom Dulat/Getty Images

Australia's Steve O'Keefe celebrates the dismissal of India's Virat Kohli during a cricket match in Pune, India, on Saturday, February 25. Rajanish Kakade/AP

Boston College's Kailey Edwards is hit in the face by Notre Dame's Arike Ogunbowale as she grabs a pass in South Bend, Indiana, on Thursday, February 23. Robert Franklin/AP

Jonathan Rea leads the pack during a Superbike race in Phillip Island, Australia, on Sunday, February 26. Robert Cianflone/Getty Images

Hawthorn's Liam Shiels tackles North Melbourne's Lindsay Thomas during an Australian Football League match on Sunday, February 26. Michael Dodge/Getty Images

Timea Babos returns a shot during the Hungarian Open on Wednesday, February 22. She went on to win the tournament. ATTILA KISBENEDEK/AFP/Getty Images