usually when a team wins, they'd be cheering and laughing and talking to each other. in this case, they are not. Though the coach sees real potential in the team, so he says that to cheer them up. Maybe they played well but the other team was stronger, but they didn't give up.
Providing background on the Renaissance would allow Charlie to talk about the shared history. This leads to talking about the effect the period had on art, and then specifically on the artists mentioned.
