The winner will advance to a two-legged series against either Toronto, the top seed, or NYCFC, the second seed, that starts on Monday or Tuesday.
Here’s a by-the-numbers look at Atlanta United’s season:
Goals against average for Brad Guzan led the league.
Is the typical formation used by Martino.
Points dropped against D.C. United, a team which finished tied for the fewest points in the league.
Yellow cards received by Leandro Gonzalez Pirez was tied for second-most in the league.
Shutouts this season.
Assists this season for Miguel Almiron, who led the team. Yamil Asad finished with 13 and Hector Villalba had 11.
Goals this season for Josef Martinez, who led the team. Hector Villalba scored 13.
Goal difference is second-most in league this season and fourth-best in league history.
Assists led the league this season.
Goals is the second-most this season and fifth-most in league history. The team scored 48 goals and allowed 19 at home.
Times caught offsides for Atlanta United.
Minutes between goals for Martinez, the best mark in the league this season for a player who scored at least five goals.
Fouls suffered by Asad was the second-most in the league.
Shots, including 179 on goal, for Atlanta United. That was 11th-most in the league this season.
Minutes without allowing a goal for Guzan. It was the longest streak in the league this season.
Tickets sold for the regular-season finale against Toronto on Oct. 22. That set the MLS record for tickets sold for a single game.
Tickets sold for the team’s 17 home games. That total is also a league record.