Answer:
Many fans consider themselves experts.
Explanation:
The sports market place place is one that is dynamica and involves wide swings of demand depending on seasonal sports activities. The core product is usually beyond the sport marketer's control, unlike in the traditional market where the marketer has a lot of control.
This is because many sports fans consider themselves to be experts in the field, so they have strong opinions about sports products. The efforts of the marketer is not that effective in this case because each fan considers themselves capable of making the best choice.