So often the focus is on which players are going to be included in the starting line-up, but in many cases game decisive interventions have been made by replacements, or finishers as Eddie Jones calls them.
Especially when games are so physically demanding, the introduction of a substitute can prove pivotal in determining the course of the game, with their sharpness proving too difficult for weary defenders to deal with.
Click through the gallery below to see who the most used substitute is for each country since 2000 and how many games they have played.
New Zealand – Keven Mealamu
77 starts, 55 replacement appearances
South Africa – Ollie le Roux
11 starts, 43 replacement apperances
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England – Danny Care
33 starts, 40 replacement appearances
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Australia – Tatafu Polota-Nau
30 starts, 46 replacement appearancess
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