The Champions League is the pinnacle of European football, featuring the top 32 teams in the continent. With so many good teams in the group stages of the tournament, it isn't easy to win matches, and Celtic know that more than most teams, as the Hoops have had to work hard for every group stage win.
That will be the case this season too, as the Hoops will need to battle for every win in the group stages, as Real Madrid, Shakhtar Donetsk and RB Leipzig are all very good teams who Celtic will need to be at their very best to get one point from, never mind three.
The Hoops did lose their recent game against Real Madrid, which was expected, but the Bhoys will be looking to get a group stage win against Shakhtar in the upcoming second group stage match, and a win in that game would help the Hoops in their quest to make the last 16 of the Champions League.
In the meantime, take a glance at our slideshow taking a look at Celtic's previous Champions League group stage victories.