And then there were 29.
Four matches in, and three teams have already been eliminated from this season's Champions League: Viktoria Plzen, Rangers and Celtic.
However, some of Europe's elite are teetering over the edge after another matchday filled with drama in Europe's elite club competition – one that also saw five teams book their spots in the draw for the last 16.
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There was also perhaps the most dramatic group-stage match ever at Camp Nou and a shock defeat on the road for one of Italy's most storied teams, while PSG managed to play a match amid the latest Kylian Mbappe soap opera.
But who were the biggest winners and losers from matchday four?
Allow GOAL break it all down for you...