Player Position: Start of Game Toss

[Steverz]

For the "start of the game" toss, is there anywhere in the books that states that both players must be of equal distances from the center division line?

In one game I was in (U1 and not administering the toss) I saw one player, while in the center restraining circle half where he was supposed to be, be about a step or so back while the other player, while in his half, was about six inches from the division line. The one coach wanted the player that was standing further out to be moved in.

Now, I was watching another game from the stands and saw the R move a jumper closer to the line so both jumpers would be equal distance from the division line.

Where in the book(s) does it states both players need to be of equal distance from the division line during the opening toss? I can't find that, only the other specifics around the opening toss.