GBJ wrote:

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Just curious - can someone tell me what the rules etc are on seed placements. In most cases I'm the 7 and 8 seeds get placed in the same quarter with 1 and 2 and 6 and 5 get placed with 3 and 4 etc. Is there always freedom to switch this like in jack's case here where as sixth seed he's placed with 1 seeded zverev? Is that a seeding committee decision or randomly drawn or.....?

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 I took this from Reddit as opposed to re type it all myself - think it is still correct, and certainly aligns with my understanding. For a smaller say 32 player draw event, the same logic applies ie 1-4 can face any of 5-8 in the last 8 stage. 

Here is how seeding works in a 32-seed event

Seeds 1 & 2 are on the top left and bottom right, respectively, to meet in the F.

Seeds 3 & 4 are randomly placed in the other corners, to meet seeds 1 & 2 in the SF.

Seeds 5-8 are randomly placed in any of the above corners, to meet seeds 1-4 in the QF.

Here is where things get tricky.

Seeds 9-12 are randomly placed to play seeds 5-8 in the 4R.

Seeds 13-16 are randomly placed to play seeds 1-4 in the 4R.

And to make things trickier...

Seeds 17-24 are randomly placed to meet seeds 9-16 in the 3R.

Seeds 25-32 are randomly placed to meet seeds 1-8, to meet in the 3R.