There were several jarring results on the fourth Sunday of the 2021 NFL season.
The Indianapolis Colts and their injured quarterback went into Miami and took down the talented, well-coached Dolphins by a double-digit margin for their first win of the year. The New York Giants and New York Jets both pulled off upsets in overtime to earn their first victories of 2021. The Chicago Bears made easier-than-most-expected work of the Detroit Lions in rookie quarterback Justin Fields' first career win. And the Arizona Cardinals shocked the favored Los Angeles Rams on the road to become this season's only 4-0 team to date.