Conor McGregor has pleaded not guilty to charges in the US relating to strong-arm robbery and criminal mischief.
It follows the Dubliner's arrest in Miami Beach, Florida, last month when he allegedly slapped a phone out of a fan's hand and stamped on it after he tried to take a picture.
He was not present in Miami-Dade County Court for yesterday's arraignment, but his lawyers entered not guilty pleas on his behalf.
His case is due to come before the court again on April 30, and a trial date has been set for May 13.
Sentences for the charge depend on criminal history, especially of violence, the value of what was stolen and whether the victim was injured.
McGregor avoided a criminal record last July after he pleaded guilty to disorderly conduct at a UFC event in New York. Several people were hurt when he hurled a trolley at a bus, smashing a window.
Fighters Michael Chiesa and Ray Borg were injured by shattered glass and unable to compete.
McGregor avoided going to jail after striking a deal with prosecutors which saw him do community service. He also had to take anger management courses and pledged to keep the peace for a year.
Despite McGregor's history, his lawyer insisted he would not be going to prison over the latest incident. Sam Rabin issued a statement last month saying the Crumlin man was giving his full co-operation.
"Last evening Conor McGregor was involved in a minor altercation over a cellphone that resulted in a call to law enforcement," Mr Rabin said in a statement issued to MMA Fighting.
"Mr McGregor appreciates the response of law enforcement and pledges his full co-operation."
The fighter was arrested when he allegedly "slapped" a phone out of a fan's hand and "stomped on it".