If it is said that one must be successful in sports because they are part of an esteemed team, what fallacy is being made?

The reasoning that someone must be successful in sports because they are part of an esteemed team illustrates the fallacy of composition. This fallacy occurs when one assumes that what is true for one part of a group or team is also true for the entire group or team. In this context, just because the team is esteemed and likely composed of talented individuals, it does not necessarily mean that every individual athlete will be successful. The attributes or reputation of the team cannot be presumed to apply to every member uniformly. Thus, the argument oversimplifies the relationship between the players and their team's reputation, leading to an erroneous conclusion about individual success based on team prestige.