He was a knowledgeable baseball fan and often took me to see the Brooklyn Dodgers play. (Para. 8)
Notice that after some verbs of physical senses, such as see, watch, hear, notice, etc, the infinitive verb is used without to:
Did you see / notice him go out? 你见他出去了吗?
I heard her sing in the next room last night. 昨夜我听见她在隔壁房间唱歌。
The policeman saw the man open the window. 警察看见那男子打开窗子。