Leinster, Wasps, Toulouse, Bath
This is arguably the toughest pool as it contains four previous champions. Holders Leinster will be strong again, while Wasps are getting some momentum, and Bath will benefit from players coming back from injury. In a group this competitive, it’s so important to win your opening game.
Player to watch
Leinster’s captain, the Irish international Johnny Sexton, is fantastic to see live.