AP photo by Mark Humphrey / New York Red Bulls defender Sean Nealis, center, competes for the ball with Nashville SC's Jack Maher, left, and Walker Zimmerman in the first half of Sunday's MLS match in Tennessee.

Major League Soccer's annual Decision Day solidified the field for the 2021 playoffs and decided the Golden Boot race, but it also marked the end of a legendary career for the league's most prolific scorer.

Chris Wondolowski announced his retirement Sunday, shortly after his San Jose Earthquakes wrapped up the regular season with a 1-1 draw with FC Dallas. Neither team advanced to the postseason.

Wondolowski finishes his 17-year MLS career with 171 regular-season goals, including one in his final match.

"It's been an amazing ride," Wondolowski said as he held back tears while addressing the fans in San Jose. "I can't thank you guys enough."

Going into the final day of the regular season, there were three playoff berths in each conference that were up for grabs.

The New England Revolution had clinched both the Supporters' Shield and the top seed in the Eastern Conference with a league-record 73 points this season. But New England dropped its final regular-season game 1-0 at home to Inter Miami CF, which already had been eliminated from the postseason. Blaise Matuidi scored the lone goal in the 58th minute.

The Revolution will have a first-round bye as the top seed and will face the winner of the first-round playoff game between the fourth-seeded New York City FC and fifth-seeded Atlanta United FC.

"That's the goal, certainly," New England coach Bruce Arena said about winning the MLS Cup. "It's going to be challenging, like it is every year for every team. And hopefully we'll have our team ready."

The playoffs start Nov. 20 after an international break. Details for the postseason schedule will be released later.

NYCFC, unbeaten in its final five matches, earned its playoff berth with a 1-1 draw against Philadelphia on Sunday. Philadelphia clinched the second seed and will play the seventh-seeded New York Red Bulls in the opening round.

NYCFC's Taty Castellanos also won the league's Golden Boot award, finishing the regular season with 19 goals, including one Sunday.

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AP photo by Ashley Landis / Atlanta United FC defender Miles Robinson, right, heads the ball against Liga MX All-Stars defender Victor Guzman during the MLS All-Star Game on Aug. 25, 2021, in Los Angeles. Robinson scored the tying goal Sunday to help Atlanta win its regular-season finale against Cincinnati 2-1 and clinch a spot in the playoffs.

Atlanta defeated Cincinnati 2-1 to secure the fifth seed and return to the playoffs after missing out last season. Josef Martinez scored the winner — a volley at a tough angle — in the 79th minute.

"It feels very good," Atlanta coach Gonzalo Pineda said. "Not just this game. I think this game is a testament of probably what was the season for the team. The first half of the season was not great, not a lot of points, then second half was very good. Credit to the players again."

Nashville SC secured a third-place finish with a 1-1 draw against the Red Bulls. Nashville will host No. 6 Orlando City in the opening round of the playoffs. Orlando shut out Montreal 2-0.

D.C. United defeated Toronto 3-1 but missed out on a playoff spot because of the draw between Nashville and the Red Bulls. D.C.'s Ola Kamara scored a pair of goals to pull even at 19 with Castellanos, who won the tiebreaker for the Golden Boot with eight assists.

The Columbus Crew, who won the 2020 title, also were eliminated from playoff contention. They beat the Chicago Fire 2-0 but needed help from other results to get in.

In the Western Conference, the Colorado Rapids hopped to the top of the table with a 5-2 victory at home over the Los Angeles Football Club, which was eliminated.

After a bye, the Rapids will play the winner of the first-round match between the fourth-seeded Portland Timbers and fifth-seeded Minnesota United.

The Timbers closed the regular season with a 3-0 victory at home over expansion Austin FC, while the Loons played to a 3-3 draw with the L.A. Galaxy, which was eliminated.

The Sounders earned the second seed with a 1-1 draw with Vancouver. Seattle will play seventh-seed Real Salt Lake, which beat third-seeded Sporting Kansas City 1-0 in a must-win game. Kansas City will face the sixth-seeded Whitecaps.