2. **How has the baseball card collecting hobby evolved over the decades, especially with the advent of digital cards and online marketplaces?
**What are the most valuable baseball cards, and what factors contribute to their high value?
How has the sport of rugby evolved over the years, particularly with regard to player safety and rule changes aimed at reducing injuries?
In water polo, what are the main roles of the players during a match, and how is the game structured in terms of periods and possession?
What are the key differences between Olympic and Paralympic archery, and how are athletes classified in the Paralympic competitions?
How does the scoring system work in competitive figure skating, and what factors do judges consider when evaluating a performance?
What are the basic rules and objectives of curling, and how is it scored during competitions?
What legal considerations should collectors be aware of when acquiring or selling high-value sports memorabilia?
How has the market for sports memorabilia evolved in recent years, and what trends are currently influencing buying and selling in this field?
What are the best practices for preserving and displaying sports memorabilia to maintain its condition and value over time?