Behind the villa is a tennis court. How about Feng Shui?

No matter what stadium is behind or in front of the villa, it will not affect Feng Shui.

The feng shui of this villa depends on the surrounding environment.

If the villa has odor (day or night) and noise (night), then

Or there are electromagnetic waves nearby, which have an impact on Feng Shui. Or where is the villa?

The position is very biased, and it will also have an impact. Even the villas are big, and people who live at home often.

The less, the greater the impact.