Jack Green (athlete) Jack Green (athlete) Jack Green (born 6 October 1991) is a British sprint athlete who specialises in the 400m distance, along with the hurdles and the 4 × 400 m relay. He competed for the Great Britain team at the 2012 Summer Olympics in London and at the 2016 Summer Olympics in Rio de Janeiro. Since late 2010, Jack Green has trained with Malcolm Arnold at the University of Bath alongside fellow hurdler Dai Greene. At the 2011 World Championships, he finished fifth in his semi-final, a performance he described as "embarrassing, a waste of my time and the team's
Dai Dai Ntab Dai Dai Ntab Dai Dai Ntab (born 17 Augustus 1994) is a Dutch professional long track speed skater who specializes in the sprint distances. He is a member of Team Plantina. At the 2016 Dutch Sprint Championships he finished 12th but won the second 500m. On 3 December 2016 he won the 500 m at the third World Cup of the 2016/17 season, held in Astana. It was his first World Cup win and in doing so he improved his personal record by 0.44s and set a new track record. He studies Communication and Marketing at the Johan Cruyff College