From the rules:
Play one of your bet tokens above a creature of your choice....
Then in under Placing a Normal Bet it reads:
.... in your chosen creature's column, just above the current round's combat row (see diagram).
Then in the diagram, it shows the bet being placed above a creature.
So which is it,
A) above the creature card,
B) or merely in the current combat row?
If its A, then the first player to play a creature card doesnt get to bet that round.
If its B, then the first player to play a creature card does get to bet that round.
Any help is greatly appreciated.