As part of the "pack" The eight forwards in union and 6 in league the hooker binds on (catches around) the prop forwards either side of them and in a scrummage their role is to "hook" back the ball as it is placed in the tunnel by the scrumhalf - This is where the term hooker comes from. IN the line out in Union only, the hooker will be given a call code by the lineout co-ordinator, normally a second row. The call is a code to where to throw the ball so that a jumper can catch the ball and gain advantage. In Rugby league the hooker acts as the "dummy player" Their role is to take a ball from the footback (a play where the tackled ball carrier places the ball to their feet and roles the ball back to the hooker) The ball then is passed in to play.
In rugby it is the hooker's job to call the other players of his team into the scrum around himself. After this the hooker binds onto (grabs) the tighthead and loosehead (big guys to his right and left) and after the scrum begins (two groups of eight guys bash into each other in pyramid formation) it is the hooker's job to scoop the ball back toward his team with his feet. This is called hooking. It also may fall to the hooker to act as a thrower when the ball goes out of bounds as they are usually smaller than the rest of the forwards and not as useful in the potential maul situation that arises out of a lineout (throw in).
A backline is a collective name for the backs of a rugby union team, whose job it is to create and exploit space.
The name remains the same - Hooker
A rugby player can deliberately knock the ball back, but he/she cannot deliberately knock it forward.
Scrum defending ball. If an intentional knock on the its a penalty from the point the offence occurred - The exception is a charged down ball where play continues. If the referee believes that a defending player has deliberately knocked on preventing a try taking plas then a penalty try is awarded under the posts.
That would be Rugby.
Dylan Hartley
Hooker, late 1920's to early 1930's
I assume you mean in the middle of the front row as there are no other positions associated with this. The player is a hooker
Bismarck du Plessis
Generally the Hooker (No. 2).
Keith Woods. Holds the world record for most tries scored by a hooker. First IRB player of the year.
Because he can play with forwards or another player in the back line