0-9
89
A "89" or eight-nine move is a phase following a scrum, in which the number 8 picks up the ball and transfers it to number 9 (scrum half).
99
The "99" call was a policy of simultaneous retaliation by the 1974 British Lions tour to South Africa, (the 99 comes from the British emergency services telephone number which is 999). The tour was marred by on-pitch violence, which the match officials did not adequately control and the relative absence of cameras compared to the modern game made citing and punishment after the fact unlikely. The Lions' Captain, Willie John McBride (Ireland) therefore instigated a policy of "one in, all in" - that is, when one Lion retaliated, all other Lions were expected to join in the melee or hit the nearest Springbok. By doing so, the referee would be unable to identify any single instigator, and so would be left with the choice of sending off all or none of the team. In this respect, the "99" call was extremely successful - no Lions player was sent off during the tour.
Read more about this topic: Glossary Of Rugby Union Terms