Football classification what are the sports classification

Does American football have different sizes
Of course, the NFL standard ball is No. 9 ball, the largest. No. 3 ball is usually played for children under the age of 10. The rest depends on how big your hands are
What are the sports categories
Other categories (other 74 items) badminton, holding ball, basketball, football, handball, hockey, softball, table tennis, tennis (including soft tennis), volleyball (including beach volleyball), ground throw, cane ball, gateball, shuttlecock, squash, billiards, golf, bowling, and sand pot ballFootball rules
In ball games, the rules of American football are more complicated. But that doesn't mean you have to read an obscure rulebook to read football. In fact, it only takes you five minutes to understand the football game. Of course, if you want to understand it deeply, it is another matter. American football is a very competitive gameWhat kind of sport is football? What has been the development process so far
Rugby is a team sport. Do you know what kind of sport rugby is and how it has developed from its origin to the present? Today, I will tell you briefly what kind of sport rugby is and how it has developed from its origin to the present. FootballClassification of balls
Ball games, including football, handball, basketball, volleyball, badminton, tennis, golf, ice hockey, beach volleyball, baseball, softball, rattan ball, shuttlecock, table tennis, billiards, kickball, cricket, squash, sand pot, curling, croquet, rugby, hockey, water polo, polo, bowling, fitness ballEnglish introduction to football
The field of American football is measured in yards. Yard means "yard". One yard is less than one meter. The "end zone" at both ends of the site is the arrival array area. In American football, "touchdown" is equivalent to "shooting" in football and "shooting" in basketballHow many kinds of rugby are there
Rugby. Rugby can be divided into two camps: rugby union and rugby leagueWhat rugby balls are there
Rugby includes rugby and American rugby. The origin of rugby is earlier than that of American rugby. There are many countries like playing rugby in the world, such as Australia, New Zealand, England and so on. New Zealand won the world cup in the Rugby World Cup in 2011 and is strongHow many kinds of football are there? What are the respective rules
After the spread of English football to other countries, it has been developing and changing. Many countries have created their own forms of football. Such as the United States, Canada, Australia and other countries, football venues, equipment, rules, clothing and even the number of playersFootball specifications
Reward points: 0 - there are 10 days and 4 hours before the end of the problem. What are the formal football specifications? Questioner: hjy0202 - probation level I will also answer: 2 points will be given if the answer is answered, and 20 points will be offered if the answer is adopted