Corner issue

[grimboid]

I was playing a match earlier as paris fc. I noticed during the game while I had near post corners set that I had a man at the back post marked by a smaller full back. I switched to far post but didn't move players around only to find on my next corner there were suddenly 4 defenders surrounding my player at the back post. 🤔 how did the opposition know to do that leaving my 2 tallest players unmarked at the front post? 

[Pezamaria]

The only thing I can think of (without being cynical) is that if you’re not watching on comprehensive highlights (or more) you’ve missed a handful of corners where you played it to far post - then you only see a highlight where they’ve worked it out and are marking him.