At a Cincinnati Reds game, a six-year-old girl celebrating her birthday caught slugger Eugenio Suarez's 350th career home run ball — and threw it back. In a sport where milestone memorabilia carries both sentimental and monetary weight, her instinctive gesture reminded onlookers that some of the most human moments in athletics belong not to the record books, but to the unrehearsed choices of those watching from the stands.