New answers tagged time-travel
Could be the Dutch film Crusade in Jeans from 2006. From Wiki: Dolf is a 15-year-old boy from Rotterdam who plays for the junior national football team. At the beginning of the film, Dolf and his team are playing an important championship game against the Belgian team in the German city of Speyer, which they lose because of Dolf. Dolf's mother works ...
Also possibly too old (1988) and British rather than American, but it does sound suspiciously like Moondial
Is it Something Wicked This Way Comes? I remember a demonic aging carousel in that, although it's a little older than what you described.
Top 50 recent answers are included