In a competition there are 20 competitors.
The winners of the competition are the competitors with the top 4 marks.

The competition is based in 2 parts A and B

Part A counts for 60% of the marks.
Part B counts for 40% of the marks.

A competitor, John achieved 83.166 % in part A and was 4th
1st place achieved a score of 87.333%

In part B the scores are unknown however John was 6th.

By my reckoning all the competitors who beat John in Part A also beat John in Part B.

What are the chances of this happening?
John came 5th overall so did not win a price. Are there any more statistics that can be offered for being 5th?

Regards