Patrick Mahomes threw a walk-off pass to win the Super Bowl. Freddie Freeman hit a walk-off grand slam to win a World Series game. Stephen Curry said “nuit, nuit” to win an Olympic basketball title in Paris, Noah Lyles won 100-meter gold by about the smallest margin possible, and Sabrina Ionescu won a WNBA Finals game with a 30-foot heave. Sports is a collection of moments. This year, many moments were — once again — spectacular.