Also, in the 19th century the term "tennis" meant real tennis, as opposed to lawn tennis.
I read that During most of the 19th century, in fact, the term ''tennis'' referred to real tennis, not lawn tennis:
i love to play tennis Cool! Do you play singles, or doubles on a team of two players? I play singles. What do you know about tennis? I know that it's played with a hollow, felt-covered rubber ball and rackets that are strung with cord. What do you like about tennis? I love the running around and hitting the ball. What else do you know about tennis? Well, I know that to get a point, the other player has to not return the ball. do you have a favorite tennis player? No  not me but The modern game of tennis originated in Birmingham, England oh thats something i didnt know
During most of the 19th century, in fact, the term ''tennis'' referred to real tennis, not lawn tennis: for example, in Disraeli's novel ''Sybil'' (1845), Lord Eugene De Vere announces that he will ''go down to Hampton Court and play tennis.''