Virtua Tennis 4

Very easy achievement to gain.

On main menu choose Arcade mode.

Make sure you put the setting to easy and choose doubles.

Choose good players like Federer or Djokovic.

You will play 4 competition matches which you only need to win two games in each to win.

Once you've won those 4 games you will get to play an exhibition match which you need to win as well.

But since you put the difficulty to easy you should win these games with no problems.

Once you've defeated the 5th guy you will have completed single's mode and the achievement will pop up.