You guys know the drill: answer a question, ask another one. No googling!
R1: (General) What are the only two days of the year on which none of the 4 major US sports play games? (Hint: not particular dates, but dates defined by proximity to a certain event).
R2: (American Football) Who holds the NFL single-season record for combined rushing and passing yardage?
R3: (Association Football) Who won the Golden Boot in the 1966 FIFA World Cup?
R4: (Formula 1) Who holds the all-time record for most F1 pole positions?
R5: (Rugby Union) Where did England play most of its home international matches before Twickenham Stadium was built?