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Many are sure that athletes with pleasure for the sake of passion are ready to perform a hard work, and sometimes and dangerous. Sports activities is a fine pastime, but there are such sports which can be not simply hazardous to health, but also life-threatening.
1. Rugby. It has all prerequisites to that you can appear in hospital. During game players of each other push with a force which has no restrictions. Many players get to hospitals because of a rupture of sheaves, injuries of muscles, stretchings, numerous changes. As the statistics showed, each player on average gets some small injuries for 1 match. And severe injuries are got by a quarter of team for game.

Question

Can you check out?)
Many are sure that athletes with pleasure for the sake of passion are ready to perform a hard work, and sometimes and dangerous. Sports activities is a fine pastime, but there are such sports which can be not simply hazardous to health, but also life-threatening. 
1. Rugby. It has all prerequisites to that you can appear in hospital. During game players of each other push with a force which has no restrictions. Many players get to hospitals because of a rupture of sheaves, injuries of muscles, stretchings, numerous changes. As the statistics showed, each player on average gets some small injuries for 1 match. And severe injuries are got by a quarter of team for game.

Answer

You should put this in the Notebook section if you want corrections.

Answer

There are too many errors. I would consider reviewing your verb tenses and your logic. Ask yourself, "is it necessary to tell the reader that many are sure without giving evidence of this conclusion"?