JJB Sports Super League IV was the official name for the year 1999's Super League championship season, the 105th season of top-level professional rugby league football in Britain, and the fourth championship run by the Super League. The start of Super League IV saw the emergence of a North East based Rugby League Club, Gateshead Thunder as well as newly promoted Wakefield Trinity Wildcats to expand the league to fourteen teams.
Rule changes
The 40/20 rule was introduced to reward accurate kicking in general play.[1][2] The rule, which had been used in Australia since 1997, gave the head and feed at the resulting scrum to a team that kicked the ball from behind their 40-metre line so that it bounced in the field of play before going into touch behind their opponent's 20 metre line.[3][4]
^de la Riviere, Richard, ed. (2009). Top ten: Rugby league rules. Brighouse, UK: League Publications (published August 2009). p. 61. ISSN1466-0105. {{cite book}}: |periodical= ignored (help)
^BBC Sport (2005-09-12). "The 40/20 kick". British Broadcasting Corporation. Retrieved 2009-09-23.