The Red Bulls edged visiting Orlando City on Sunday to claim the Supporters’ Shield as Major League Soccer’s regular-season champion.

The Red Bulls took advantage of a rare stumble by first-place Atlanta United to leapfrog Atlanta in the standings and claim the top seed in the playoffs on a wild final day that also saw one of the league’s biggest stars, Zlatan Ibrahimovic, miss out on the postseason when his Los Angeles Galaxy blew a two-goal lead and lost at home.

The Red Bulls’ 1-0 victory over last-place Orlando and Atlanta United’s 4-1 humbling at Toronto, which missed the playoffs after winning the M.L.S. championship last season, gave the team its third Supporters’ Shield in six years and set a league record for most points in the regular season, with 71. The Red Bulls also won the Shield, awarded by fans to the team with the league’s best record in the regular season, in 2013 and 2015.

Derrick Etienne scored the only goal for the Red Bulls, atoning for a missed penalty kick in the first half by slotting in a low shot in the 53rd minute.