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
Mark Hollis (athlete) Mark Hollis (athlete) Mark Hollis (born December 1, 1984) is an American track and field athlete who competes in the pole vault. His personal best for the event is , set in 2014. He finished third at the 2014 IAAF Continental Cup. Hollis is a three-time national champion in his discipline, having won outdoors in 2010 and indoors in 2011 and 2014. He represented his country at the 2011 World Championships in Athletics. He ranked second in the world in the 2014 season. Hollis grew up in Freeport, Illinois, the son of John Hollis, a second-generation pastor of the Church