How to say you have to be more careful when you play ball. in Japanese
1)
野球野球(yakyuu) (n) baseballをを(wo) (prt) indicates direct object of action/indicates subject of causative expression/indicates an area traversed/indicates time over which action takes place/indicates point of departure or separation of action/indicates object of desire, like, hate,するする(suru) (vs-i) to do/to cause to become/to make/to turn/to serve as/to act as/to work as/to wear/to judge as being/to view as being/to think of as/to treat as/to use as/to decide on/to choose/ to be sensed/to be/to be worth/to cost/to pasときはもっとno dictionary result, likely a conjigated verbno dictionary result, likely a conjigated verb気気(ki) (n) spirit/mind/heart/nature/disposition/motivation/intention/mood/feelings/atmosphere/essenceをを(wo) (prt) indicates direct object of action/indicates subject of causative expression/indicates an area traversed/indicates time over which action takes place/indicates point of departure or separation of action/indicates object of desire, like, hate,つけないとno dictionary result, likely a conjigated verbno dictionary result, likely a conjigated verbねね(ne) (prt) indicates emphasis, agreement, request for confirmation, etc./is it so/hey/come on。。(。) Japanese period "."
