Premise: "A tennis player about to hit the ball."\nHypothesis: "The player is playing doubles on an indoor court."\nDo we know that the hypothesis entailed by the premise?
Let's be accurate as possible. Think before you answer.
it is not possible to tell
The player could be playing in a singles match and is not necessarily playing doubles.

The man could be playing on an outdoor court instead of an indoor court.

.

The answer is it is not possible to tell