Ideal categorical market example
Question: Who will win the 2025 MLB World Series?
Options:
- Yankees
- Braves
- Dodgers
- Astros
- Red Sox
- Other
Resolution Date: November 5, 2025, 11:59 PM
Resolution Rules: This market resolves to the team officially declared
the winner of the 2025 MLB World Series by MLB.com. If the MLB season is
canceled or incomplete by the resolution date, all options resolve to
NO.
Sources:
Crafting great categorical markets
Write a clear, singular question
- Clearly specify the event and year.
- Avoid complex or multi-part questions.
Provide distinct and comprehensive options
- Clearly list options exactly as they officially appear.
- Limit to between 2 and 20 options.
- Always include an “Other” option to handle unexpected outcomes.
Clearly explain resolution rules
- Rules should clearly specify how and when the market resolves.
- Address special cases such as event cancellations or incompletions.
- Avoid ambiguity; clear wording is essential.
Choose a realistic resolution date
- Use the official date of event completion, if available.
- Clearly indicate the timezone and time cutoff.
- Date must fall within one year from proposal.
List official sources separately
- Provide any and all sources mentioned in the rules.
- Users rely on these sources to confirm market results.
Option images (optional)
- Add square images or logos for each option.
- Images should default to the main market image if not provided
individually.
Pro tip — always imagine unexpected outcomes. Your market rules should
clearly handle any scenario to avoid confusion.
