Head2Head markets are ordinary markets with the two head2head competitors being the two outcomes. Each outcome’s id is the competitor id for that outcome.
Head2head markets are currently associated with a broad sr:simple_tournament that is used for all head2head offers for the same sport no matter what actual race it is (just like the LCoO feed works today).
Note: This will change, and the head2head markets will be associated directly with the exact race-event.
