Complex sentence: In 2015, tournament governing committee expressed their intention to move away from the phase system to home-away round robin format, which means, each team will play each other once at its home venue and once at an away venue.
Split into simpler sentences: In 2015, tournament Governing Committee expressed their intention to move away from the phase system to home-away round robin format. Which means, each team will play each other once at it's home venue and once at an away venue.