Mick Schumacher, son of Formula One driver Michael Schumacher, removes his helmet after a Formula Four car test racing during a media day at Oschersleben circuit in Oschersleben April 8, 2015. REUTERS/Fabrizio Bensch 

Barcelona's Luis Suarez holds his son Benjamin after the celebration parade at Camp Nou stadium in Barcelona, Spain, June 7, 2015. REUTERS/Albert Gea 

U.S. golfer Tiger Woods' son Charlie carries one of his father's clubs along the fourth hole during the par 3 event held ahead of the 2015 Masters at Augusta National Golf Course in Augusta, Georgia April 8, 2015. REUTERS/Phil Noble 

Los Angeles Galaxy's David Beckham kisses his sons Brooklyn (L), Romeo (C) and Cruz (R) before the MLS Cup championship soccer game against Houston Dynamo in Carson, California, December 1, 2012. REUTERS/Danny Moloshok 

New England Patriots kicker Stephen Gostkowski (3) shows his five-year-old son Slayden the Vince Lombardi Trophy after his team defeated the Seattle Seahawks
in the NFL Super Bowl XLIX football game in Glendale, Arizona, February 1, 2015. REUTERS/Lucy Nicholson 

Barcelona's Neymar from Brazil holds his son Davi Lucca Da Silva before their Spanish first division soccer match against Celta de Vigo at Camp Nou stadium in Barcelona November 1, 2014. REUTERS/Albert Gea 

Real Madrid's Cristiano Ronaldo of Portugal, stands with his son Cristiano Ronaldo Jr, after winning the FIFA Ballon d'Or 2014 during the soccer awards ceremony at the Kongresshaus in Zurich January 12, 2015. REUTERS/Arnd Wiegmann 

Barcelona's Lionel Messi holds his son Thiago during celebrations for winning the Spanish first division soccer league at Camp Nou stadium in Barcelona, Spain, May 23, 2015. REUTERS/Albert Gea 

Shinsuke Yamanaka (C) of Japan poses with his son Gosuke (L) and daughter Ririno as he celebrates defeating Anselmo Moreno of Panama during their World Boxing Council (WBC) bantamweight title bout in Tokyo, Japan, September 22, 2015. REUTERS/Toru Hanai 

Roger Federer of Switzerland high fives Cruz Hewitt, the son of Lleyton Hewitt of Australia, during the Kids Tennis Day before the Australian Open 2014 tennis tournament in Melbourne, January 11, 2014. REUTERS/David Gray 

Barcelona's soccer player Gerard Pique (C) holds his sons Sasha (L) and Milan (R) before the Spanish first division soccer match between Barcelona and Valencia at Camp Nou stadium in Barcelona, April 18, 2015. REUTERS/Albert Gea 

Atletico Madrid's newly signed Colombian striker Jackson Martinez (R) walks with his son Josue during a media presentation at the Vicente Calderon stadium in Madrid, Spain, July 26, 2015. REUTERS/Susana Vera 

Son of Manchester United's Wayne Rooney, Klay, during a lap of honour after the Manchester United vs Arsenal match at the Old Trafford, Manchester, England, May 17, 2015.
Reuters / Phil Noble
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Barcelona's Andres Iniesta (C) poses with his daughter Valeria (L) and son Paolo Andrea (R), next to team mate Luis Suarez before their Spanish first division soccer match against Villarreal at Camp Nou stadium in Barcelona, Spain, November 8, 2015. REUTERS/Albert Gea 

Warrington Wolves' Ashton Simms with his child after the rugby game against Catalans Dragons during the First Utility Super League Super 8s at the Halliwell Jones Stadium in Warrington, England, September 19, 2015.
Mandatory Credit: Action Images / Ryan Browne
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Takashi Miura of Japan holds his son Takeharu as he celebrates his victory over Edgar Puerta of Mexico during their WBC boxing super featherweight title bout in Tokyo November 22, 2014. REUTERS/Thomas Peter 

Barcelona's player Gerard Pique and his son Milan take part in celebrations for winning the Spanish first division soccer league at Camp Nou stadium in Barcelona, Spain, May 23, 2015. REUTERS/Albert Gea