Let's analyze the question regarding Captain Roop Singh Stadium and its associated sport. The question asks to identify the sport primarily played at this stadium.

Captain Roop Singh Stadium and Its Sport

Captain Roop Singh Stadium is a well-known sports venue located in Gwalior, Madhya Pradesh, India. Stadiums are often built and maintained with specific sports in mind, although they can sometimes host multiple types of events.

Upon researching Captain Roop Singh Stadium, it is widely recognized for hosting international cricket matches. It has been a venue for One Day Internationals (ODIs).

A significant event that took place at this stadium was Sachin Tendulkar's historic first double century in ODI cricket, achieved against South Africa in February 2010. This event further solidified the stadium's identity as a major cricket ground.

Considering this information, Captain Roop Singh Stadium is directly related to the sport of cricket.

• Volleyball is typically played indoors or on specific courts, not large stadiums like Captain Roop Singh Stadium.
• Athletics often takes place in stadiums with a running track, which is not the primary feature or use of Captain Roop Singh Stadium.
• While hockey is a popular sport in India, stadiums specifically named after famous hockey players (Captain Roop Singh was a famous hockey player) might lead one to think of hockey, but this particular stadium in Gwalior is famously a cricket venue.
• Cricket requires a large field, stands for spectators, and a pitch, all of which are features of Captain Roop Singh Stadium.

Therefore, the sport related to Captain Roop Singh Stadium is cricket.