Each number coordinates to each position on the Rugby pitch, or field.
1-8 are positions associated with the Forward positions.
9-15 are positions associated with the Back positions.
1- Prop
2- Hooker
3- Prop
4- Second Row
5- Second Row
6- Flanker
7- Flanker
8- Eight man
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9- Scrum Half
10- Fly Half
11- Wing
12- Inside Center
13- Outside Center
14- Wing
15- Fullback