American influence in the world is certainly considerable, but the United States does not control, directly or indirectly, the politics and economics of other societies, as empires have always done, save for a few special cases that turn out to be the exceptions that prove the rule.
If architecture is, as is sometimes said, music set in concrete, then football and basketball may be said to be creativity embodied in team sports.
Read the news section of the newspaper and there is confusion and uncertainty, a world buffeted by large forces people neither understand nor control. But turn to the sports section and it's all different.
The cardinal sin in sports, what could really wreck it, is not cheating to win, which has gone on forever, but cheating to lose. That threatens a fundamental aspect of sports' appeal, which is their spontaneity. If games are fixed, they're no different from movies they're scripted.
The United States contributes to peace in both by serving as a buffer between and among regional powers that, while not preparing for armed conflict, do not fully trust one another.