With this, we will take a look at players with the most goals in a single Champions League campaign before the knockout stage. Players with most goals in a single Champions League campaign before the knockout stage5. He also missed a chance to equal Ronaldo’s group stage record with a goal in the group stage. Kylian Mbappé (2025/26): 13 goals(Courtesy: LaLiga)Cristiano Ronaldo’s milestone for the highest number of goals scored in a single Champions League competition’s group stage or league phase has been surpassed by Kylian Mbappé. Which player has the most goals in a single group/league phase campaign in the Champions League?