Corner kicks were at the core of the Crew's undoing against Atlanta United on Saturday. Columbus would fall 2-1 on the road after Atlanta defender Stian Gregersen scored two second half goals corner kicks.

Gregersen had nearly identical executions for both of his goals, which were scored less than 20 minutes apart. Atlanta forward Saba Lobjanidze took the corner kicks from the left side, and Gregersen, in the middle of the box, swiftly converted both corners into header goals.

Before Gregersen's goals, Columbus took the lead in the first half with a goal from forward Diego Rossi in the 36th minute. Rossi found the opportunity to score when midfielder Alex Matan's shot attempt was saved but the save from goalkeeper Brad Guzan hit off his hands to Rossi's feet in the center of the box to give the Crew a 1-0 lead.

When Gregersen scored his second goal, it marked the first time in July that the Crew fell behind in a match. This is also the first time this season that Columbus lost a match after taking the lead to start.

Columbus goes into the MLS All-Star break and Leagues Cup with a 12-4-7 record.

(89') Aziel Jackson makes Columbus Crew debut

Aziel Jackson entered the match near the end of regulation for Columbus, replacing Mo Farsi. This marks his first game for the Crew since signing back in June.

(79') Columbus Crew make two substitutions vs Atlanta United

With their first substitutions of the game, Crew make two changes:

• Defender Malte Amundsen for Yevhen Cheberko

• Forward Jacen Russell-Rowe for Christian Ramirez

(76') Stian Gregersen scores second goal vs Columbus Crew, Atlanta United take 2-1 lead

In the same fashion that defender Stian Gregersen scored his first goal over 15 minutes earlier, Gregersen gives Atlanta the lead with a header off a corner kick from forward Saba Lobjanidze.

Gregersen's goal looked nearly identical to his first of the night, with the header from the left side and goalkeeper Nicholas Hagen having no time to react as the ball went to the back of the left corner of Columbus' goal.

(60') Atlanta United evens score 1-1 vs Columbus Crew

Atlanta United has tied the match 1-1 with a header goal from defender Stian Gregersen off a corner kick.

Forward Saba Lobjanidze executed the corner kick from the left of Columbus' goal. Gregersen found the ball in the air and immediately sent his header shot to the top left of the goal, giving goalkeeper Nicholas Hagen no time to react.

(45') Columbus Crew hold 1-0 lead over Atlanta United going into halftime

The goal from Diego Rossi gives Columbus a 1-0 lead over Atlanta after the first half of play.

Columbus finished the half with 10 shots, three on goal and controlled the possession at a rate of 64.8%. Atlanta took eight shots, three on goal.

(36') Diego Rossi scores, Columbus Crew take 1-0 lead vs Atlanta United

Midfielder Alex Matan attempted a shot from the left side of Atlanta's goal, when goalkeeper Brad Guzan made a save that hit off his fingertips to the foot of forward Diego Rossi, who was close and center to the goal. Rossi needed one soft touch to score and give Columbus a 1-0 lead.

Rossi has scored 10 goals in the MLS regular season and 13 overall, including Champions Cup. He sits second in goals on the roster, behind striker Cucho Hernandez.

(29') Columbus Crew defender Yevhen Cheberko handed yellow card

Defender Yevhen Cheberko was given Columbus' first yellow card of the match with a foul against forward Jamal Thiare.

(26') Atlanta United given yellow card, Columbus Crew earns free kick

Atlanta Tristan Muyumba was given a yellow card near the edge of Atlanta's box for a foul against forward Diego Rossi. The Crew free kick was executed from the right side of Atlanta's goal but was unsuccessful.

(7') Atlanta United offsides violation overrules Columbus Crew foul in their own box

Atlanta forward Jamal Thiare was making a run with the ball, and after his first shot attempt was blocked, Thiare was able to regain control. Looking to attempt another shot a second time with Hagen recovering in goal, Hagen drew a whistle with a foul against Thiare in the box, but the officials overturned the call due to Thiare being offsides.

(3') Cucho Hernandez takes first shot vs Atlanta United for Columbus Crew

Atlanta took the first overall shot of the match, with midfielder Bartosz Slisz sending a header far left of Columbus' goal in the first minute of play, but striker Cucho Hernandez took Columbus' first shot against Atlanta.

Near the top of Atlanta's box, Hernandez sent a long-distance shot over Atlanta's goal. In the Crew's two previous matches before Atlanta, Hernandez scored off a long-distance shot as the striker rides a three-game scoring streak.

Atlanta United availability report vs Columbus Crew

Here is the Atlanta's official availability report:

• Noah Cobb (international duty): Out

• Edwin Mosquera (knee): Questionable

• Calbe Wiley (international duty): Out

Columbus Crew availability report vs Atlanta United

Here is the Crew's official availability report:

• Evan Bush (arm): Out

• Patrick Schulte (international duty): Out

Dylan Chambost ineligible for Columbus Crew vs Atlanta United

Midfielder Dylan Chambost was expected to be available for Columbus Crew against Atlanta United with the opening of the MLS secondary transfer window on July 18. The Crew signed Chambost from Saint Etienne, a professional French club, but due to U.S. Soccer not having his International Transfer Certificate yet, he can no longer play in the Atlanta match or be recognized by the Crew until it is processed.

Atlanta United starting lineup vs Columbus Crew

Here is the starting 11 for Atlanta vs Columbus:

• GK: Brad Guzan

• DF: Stian Gregersen

• DF: Ronald Hernandez

• DF: Brooks Lennon

• DF: Derrick Williams

• MF: Ajani Fortune

• MF: Tristan Muyumba

• MF: Bartosz Slisz

• FW: Saba Lobjanidze

• FW: Xande Silva

• FW: Jamal Thiare

Columbus Crew starting lineup vs Atlanta United

Here is the starting 11 for Columbus vs Atlanta:

• GK: Nicholas Hagen

• DF: Rudy Camacho

• DF: Yevhen Cheberko

• DF: Steven Moriera

• MF: Max Arfsten

• MF: Mo Farsi

• MF: Alex Matan

• MF: Sean Zawadzki

• FW: Cucho Hernandez

• FW: Christian Ramirez

• FW: Diego Rossi

Who are the referees for Columbus Crew vs Atlanta United?

Here are the officials for the Crew vs Atlanta on Saturday night:

• Referee: Rosendo Mendoza

• Assistant Referee 1: Corey Parker

• Assistant Referee 2: Jeffrey Swartzel

• Fourth Official: Nabil Bensalah

• VAR: Kevin Terry Jr.

• Assistant VAR: Fabio Tovar

Columbus Crew overall record vs Atlanta United

The Crew are 10-6-3 overall against Atlanta and are 3-2-1 at Mercedez-Benz Stadium.

How to listen to Columbus Crew vs Atlanta United radio broadcast

The Crew vs. Atlanta English-speaking radio broadcast will be on Alt 105.7 FM and available via the iHeartRadio app. Columbus' regular radio broadcaster Chris Doran will be on the call.

The Spanish radio broadcast can be found on La Grande 102.5 FM and the La Grande radio app with Juan Valladares doing play-by-play.

Columbus Crew vs Atlanta United streaming information

The Crew-Atlanta match will be available on Apple TV with an MLS Season Pass subscription. Here are the broadcast teams for tonight:

• English broadcast: Tony Husband (play-by-play), Ross Smith (analyst)

• Spanish broadcast: Jose Bauz (play-by-play), Andres Agulla (analyst)

When is the Columbus Crew vs Atlanta United match?

Kickoff: 7:30 p.m., Saturday, July 20 at Mercedes-Benz Stadium in Atlanta, Ga.

bmackay@dispatch.com

@brimackay15

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This article originally appeared on The Columbus Dispatch: Columbus Crew vs Atlanta United: Live updates, scores and more