baseball
In Italian, the word baseball is used just as it is in English. There is no translation for it. It's a borrowed word that Italians use for the popular sport that came from the United States. 'Baseball' is also used in a sentence the same way as it is in English.
I like watching baseball on television.
This simple declarative sentence expresses the speaker's preference for watching baseball on television. It uses the phrase 'Mi piace' which literally translates to 'it pleases me', but is commonly used to express liking something.
Baseball is a very popular game in America.
This sentence provides a piece of factual information about the popularity of baseball in America. It uses the phrase 'è un gioco molto popolare' which translates directly to 'is a very popular game'.
They played baseball all afternoon.
This sentence provides information about what activity has been done (playing baseball), who did the activity (they), and the duration of the activity (all afternoon). It uses the past tense verb 'hanno giocato' which translates directly to 'they played'.