So, who exactly is using the BackBaller around the world?
Soccer: John Terry, Arsenal, Liverpool, Preston North End, Chelsea, Hull City, Burnley, Stoke City, Manchester City, West Bromwich Albion, Blackpool, Derby County, Northern Ireland
Rugby: Melbourne Rebels, Connacht Rugby, Ospreys, Wasps, Grenoble, Wigan Warriors.
American Football: San Francisco 49ers, Miami Dolphins, Dallas Cowboys.
Tennis: Roger Federer, Martina Hingis.
Cyclists: Eddie Dunbar (Aqua Blue Sport)
Athletics: Mo Farah, Sonia O'Sullivan, Brooke Stratton, Jess Tregove, Anneliese Rubie, Jenny Meadows, Jenna Bromell.
Irish Sports Clubs: Cork GAA, Clare GAA.