A short pre-season competition was also played from 3 September to 10 October 2015 to provide each Top League team with five official matches before the regular season.

[2][3] The only change to the make-up of the league was the Challenge One winner Honda Heat replacing Kyuden Voltex.

A pre-season competition was staged to provide each Top League team with five matches before the regular season.

[2][3] For the second stage, played from 3–10 October, the top teams in each pool were bracketed together to determine the pre-season competition winner.

Similarly, the bottom 4 sides in each pool went on to the lower bracket play-offs to determine the final classification positions 9 to 16.

[5] Kyuden Voltex, Mitsubishi Sagamihara DynaBoars, Munakata Sanix Blues and Osaka Police progressed to the promotion play-offs.