THE 8 EVENTSMen (4 categories): flyweight (up to 58kg), lightweight (up to 68kg), middleweight (up to 80kg), heavyweight (over 80kg)Women (4 categories): flyweight (up to 49kg), lightweight (up to 57kg), middleweight (up to 67kg), heavyweight (over 67kg)THE FORMATThere is a knock-out tournament for each weight category, with the losing semi-finalists facing the winners of the repechage tournament for the bronze medal.Competitors beaten by the finalists before the semi-final take part in the repechage tournament. The 2 repechage winners then facing the losing semi-finalists, from the opposite half of the bracket, in a bronze medal match. 2 bronze medals are awarded in taekwondo.MILESTONES1st century B.CA Korean martial art for self-defence is an early form of taekwondo.7th centuryIn Korea, combats using the hands and feet are staged.16th centuryAccording to legend, 700 Koreans rout the invading Japanese through fist and foot fighting.1910-45During the Japanese occupation of Korea, traditional martial arts are banned, although many are still practised in secret.1955A South Korean general invents the term tae-kwon-do. In Korean, tae means foot, kwon means fist and do means way. Taekwondo thus translates as the way of the foot and fist.1973The first world championships are held in Seoul.1988Taekwondo is included as a demonstration sport at the Games in Seoul.1992Taekwondo is once again a demonstration sport at the Barcelona Games.2000Taekwondo makes its official Olympic debut in Sydney.THE STARSJung Jae-eun (South Korea)The prodigy. World champion in 1997 at the age of just 17, and again in 2001. The South Korean also won the Olympic title in 2000, in the womens lightweight category (-57kg).Steven Lopez (United States)After World Cup victory in 1997, the American won two Olympic gold medals, in 2000 (-68kg) and 2004 (-80kg), plus a bronze in 2008 (-80kg). He was also crowned world champion 5 times (2001, 2003, 2005, 2007, 2009).Chen Zhong (China)The first athlete to win a gold medal for China in taekwondo, with victory at the Sydney Games in 2000 (+67kg). 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Cote helped running back Jon Cornish run for a league-high 1,813 rushing yards en route to being named the leagues most outstanding player.Hull KR have signed half back Jamie Ellis on a season-long loan from Huddersfield Giants and Andrew Heffernan from Penrith Panthers on a permanent deal.A former St Helens academy graduate, Ellis has made 100 first-team appearances during a career with Super League clubs Hull FC, Castleford Tigers and the Giants. The 2016 Super League season might be over but theres still plenty of news with the Four Nations kicking off on Friday. Jenna Brooks has the latest. The 27-year-old starred for Leigh Centurions in his only season in the Kingstone Press Championship in 2011 when he was named Player of the Year and Young Player of the Year. Its all happened pretty quickly really but Im looking forward to being here. Ive spoken to [Hull KR head coach] Tim [Sheens] quite a bit and hes one of the best coaches in the world, so working with him will help to improve my game, he told the clubs official website.Im going to get my head down and train hard but hopefully Ill have the chance to be one of the main pivots in the team. I just want to have a good season with the club and play regularly.I played in the Championship in 2011 with Leigh and its a tough, physical league. There are a lot of teams trying to get into Super League and then youve got tthe Qualifiers, which are always tough.dddddddddddd Watch NOW TV Watch Sky Sports for just £6.99. No contract. Its going to be a competitive season but hopefully we should do really well and Im looking to help Hull KR get back up to where they belong.Heffernan joins from NRL side Penrith, having come through the ranks at Canberra Raiders.The 21-year-old makes the move to Yorkshire having impressed in the Intrust Super Premiership, the reserve grade competition to the NRL, having failed to secure a regular starting berth for the Panthers.Andrew was highly rated when he came through the system at Canberra and Penrith pulled out all the stops to take him there, added Sheens. Andrew Heffernan during his time with Canberra Raiders Unfortunately for him he was stuck behind some excellent outside backs at the Panthers which has opened the door for us to bring him on board.Hes quick, skillful, has excellent footwork and can play in a few positions. We see him playing mainly at centre for us but his versatility gives us options within the squad which will be important next season.Andrew is somebody who a lot of supporters over here wont have seen before but Im confident that after four or five games everybody will know what hes about.Meanwhile, Hull KR have confirmed a number of players have struck deals with other sides for next season, while others have either been released by the club or have failed to agree terms with them.Josh Mantellato, Albert Kelly, Mitch Allgood, Kevin Larroyer and John Boudebza will all leave the Lightstream Stadium.Also See:Hull KR beaten in QualifierSt Helens promote CunninghamHill, Currie extend Wolves stayHardaker joins Tigers on loan ' ' '