if the ball is delivered in such a way that it enters the field at the point where it left, you can throw it from wherever you want. if however you are in line with the point where the ball left the field but throw it at an angle, it will enter the field not at the point at which it left. Depending on how far away from the touchline you are, the greater the distance between the point of entry and where it should enter. Simple Pythagoras theorem really
Sorry Brian, but that's just not correct.
The laws state that the throw is taken from where it left the field, not 'taken from where it left the field OR enters from where it left the field'.
From what you're saying a player can take the throw 10 yards down the line and as long as it's taken along the line and enters the right spot it would be fine!
Given that the laws require the throw to be taken from where it left the field of player, consider that here we have the vicinity of the field of play is clearly delineated into the 'active participant' area and the 'spectator' area.
I'm quite confident with assuming that the intent of the laws is that the TI isn't taken from the 'spectator' area.
And oh look! There is even a part of the law that isn't satisfied when this occurs!
Use your judgement on the day but this sounds like an incorrect throw to me.
The expectation from the players is that the player taking the throw will return to the field first - and that's a completely reasonable expectation. If the player is still in the gully beside the field and decides to take a quick throw from down there you're not exactly going to permit that!
So going back to the first sentence of the previous paragraph, one cannot make the argument that there's no impact upon play; if there was no benefit to taking this throw quicker than they should, then they wouldn't have done it. Same as taking it 'down the line' from the mark rather than 'up the line' - they may lose field position but if they weren't benefitting from it they wouldn't do it.
Taking the TI from this far back also changes the trajectory of the throw away from what would otherwise be possible - which, when you're looking at headers, has a significant impact.
And of course, we get to look at all that, as well as our understanding of the spirit of the game in that players should be returning to the vicinity of the FOP before taking a throw, and then look at what the LOTG require.
The TI is taken from where the ball left the FOP.
Was that met?
No.