Do you mean riders that two managers have in common?
On the Overview of Similarities, hover over the number in the # Overlap column, and there it is.
No, thats not what I mean.
On the site last year you had at least four search bars where you could name one, two, three or four riders names and get a list of managers that had the combination of those selected or not.
So if x + y finished 1st and 2nd. You could go to combo search section and see if anyone or how many had that combination of riders in their team.