Onside

[Becky]

Onside in Soccer. Players cannot be judged, offside if they were in their half of the pitch when they received the ball, or if an opponent was the last player to touch the ball. They are also onside if they take the ball direct from a throw-in, corner kick or goal kick.

[Luis Fok]

(in football and some other sports) in a position where you are allowed to kick, throw, or receive the ball or puck