A timeline of Gerardo Martino's career as manager at Atlanta United. The team announced on Tuesday that Martino didn't renew his contract and will leave at the end of the MLS season:

Sept. 27, 2016: Martino is named as Atlanta United's first manager.

Sept. 28, 2016: Martino is introduced as Atlanta United's manager at the World of Coke.

March 5, 2017: Atlanta United plays its first game, losing to New York Red Bulls 2-1 at Georgia Tech's Bobby Dodd Stadium.

March 12, 2017: Atlanta United posts its first win, a 6-1 demolition of Minnesota United in the snow.

March 18, 2017: Atlanta United wins its first home game, a 4-0 victory over Chicago.

March 31, 2017: Atlanta United posts its first draw, a 0-0 affair at Seattle.

June 14, 2017: Atlanta United defeats Charleston 3-2 in its first U.S. Open Cup game.

June 28, 2017: Atlanta United is eliminated from the U.S. Open Cup with a 3-2 loss at Miami FC.

July 21, 2017: Atlanta United defeats Orlando 1-0 in the teams' first meeting.

Sept. 10, 2017: Atlanta United opens Mercedes-Benz Stadium with a 3-0 win against Dallas.

Sept. 13, 2017: Atlanta United destroys New England 7-0, holding the Revs without a shot.

Oct. 22, 2017: A free kick by Toronto's Sebastian Giovinco ties the game 2-2 and knocks Atlanta United from the second seed in the East to the fourth seed.

Oct. 26, 2017: Atlanta United is beaten by Columbus in penalties in the first round of the playoffs.

March 3, 2018: Atlanta United opens its second season with a 4-0 loss at Houston.

March 11, 2018: It posts its first win in its second season when it defeats D.C. United 3-1 at Mercedes-Benz Stadium.

June 20, 2018: Atlanta United is knocked out of the U.S. Open Cup for the second consecutive year when Chicago wins 1-0 at Mercedes-Benz Stadium.

Aug. 1 2018: Martino manages the MLS All-Stars against Juventus at Mercedes-Benz Stadium.

Aug. 31, 2018: Martino says he isn't worried about his contract, which is set to expire at season's end. There is an option in the contract that is supposed to be exercised by Oct. 8.

Sept. 20, 2018: Martino says that he has received a formal contract extension offer from Atlanta United.

Sept. 28, 2018: Martino denies reportedly having conversations with Mexico about its manager position.

Oct. 4, 2018: Martino says he is focusing only on Atlanta United.

Oct. 8, 2018: Deadline for extending Martino's contract isn't exercised by either Martino or Atlanta United.

Oct. 21, 2018: Atlanta United defeats Chicago 2-1 and ties the MLS single-season points record (69) and clinches a spot in next year's CONCACAF Champions League tournament.

Oct. 23, 2018: Team announces Martino will resign at season's end.

Oct. 28, 2018: Atlanta United will play at Toronto. If it wins, or if Red Bulls fail to win, it will win the Supporters' Shield.

Nov. 4, 2018: Atlanta United will play its first playoff game this season on the road.

Nov. 11, 2018: Atlanta United will host its first playoff game this season. It could be Martino's final game as Atlanta United's manager at Mercedes-Benz Stadium.

Nov. 25, 29, 2018: Conference finals.

Dec. 8, 2018: MLS Cup.