Semi-Random Database Order

I am currently developing a game that has a table of users. For example each user has a strength of 1-100 (100 being the strongest). Now I would like to order the database from strongest to weakest, easy. But say these people were fighting in real life the strongest is more likely to win, but this is not always the case. So I would like to semi-randomize the database keeping the overall strongest/weakest ordering but adding an element of randomness. This will very basically mock real life outcomes.

Any clever suggestions? I was thinking of doing something like random 10% blocks or something of that nature. Any other suggestions would be very welcome.

Thanks Alex