News The first ever Olympic Games rugby sevens competition at Rio 2016 is a historic moment for the sport, but it will be particularly special for seven families who have two members competing in the tournament Among the 288 rugby players taking part in the Games, 14 have a brother or sister competing too Spectator guide to rugby sevens at Deodoro Stadium Meet the seven sets of siblings making their families doubly proud at Rio 2016 Akiro and Rieko Ioane The brothers from Auckland play on the same team for club and country, representing New Zealand on the international stage and the Blues in Super Rugby Sonny Bill and Niall Williams All Blacks superstar Sonny Bill Williams, who melted hearts around the world when he gave his winner's medal to a 14-year-old fan at the 2015 Rugby World Cup final, is not the only Williams heading to Rio His younger sister Niall competes as a centre for New Zealand women Collins Injera and Humphrey Kayange Injera, 29, holds the record for the number of tries scored on the Sevens World Series circuit (235), while his 34-year-old brother Kayange is a former captain of Kenya's sevens side who now works as an organic chemist in Bristol, England Barbara and Pol Pla Barbara has more than a decade of experience as a centre or scrum-half for the Spanish women's team, while her 23-year-old brother Pol made his debut for the men's team in November last year Lucas and Moises Duque Brazil's men's rugby sevens team contains two sets of brothers, with 32-year-old fly-half Lucas and 27-year-old centre Moises set to line up together at Rio 2016 The pair also play on the same side at club level for São José Felipe and Daniel Sancery The other two siblings in the Brazilian side are twins, with Daniel playing on the wing and Felipe as a centre The 22 year-olds are also club team-mates for Albi in France, where the Sancery family moved when the brothers were four years old Nicole and Sharon Acevedo The Rio 2016 Olympic Games will be a special event for the Acevedo family as Colombian sisters Nicole and Sharon, aged 21 and 23, line up together when the South Americans face Fiji, Australia and the United States in pool A   Tickets for the Olympic and Paralympic Games are on sale on the Rio 2016 Portal Rugby ball unveiled for sevens competition Spanish rugby does the double: 'Las Leonas' win final place at Rio 2016 Rugby sevens match schedule