Marcus Morris Sr. just appeared in a Florida courtroom for the first time since his arrest over the weekend … but things did not go the NBA star’s way during the proceedings.

The 35-year-old has been in custody in Broward County since Sunday over allegations he stiffed a casino in Las Vegas … and at a hearing regarding the matter on Tuesday, Morris’ attorneys asked for bond so he could get a handle on the issue.

The lawyers told the judge that Morris was in the process of paying off his debts in Nevada — and releasing him would help expedite that.

The judge, though, denied the motion for bond … and said she would only release him to Nevada authorities for extradition — or if the warrants that were issued for his arrest were withdrawn.

Morris — who was wearing handcuffs and a jail-issued jumpsuit — did not speak during the proceedings. His brother, former NBA champion Markieff Morris, was in the courtroom offering support.

Another hearing was slated for Morris for late August … but it’s clear, the basketball player and his team are hoping things get resolved well before that.

We broke the story … Morris was arrested at Fort Lauderdale-Hollywood International Airport and booked on a charge of fraud — insufficient funds check charge.

The Morris brothers’ agent, Yony Noy, said in a statement on X it all stemmed from “an outstanding marker with a casino.”

“Apparently if you have over $1,200 they can issue a warrant for your arrest. Absolute insanity!”