Jermall Charlo just scored a big win in his assault case ... prosecutors tell TMZ Sports they're dropping the felony charge against the star boxer.
According to court documents, Charlo was accused of roughing up a family member during a Sept. 5, 2021 incident in Fort Bend County, Texas. He was eventually arrested over it all back in February, and charged with felony assault.
But a spokesperson for the Fort Bend County District Attorney's Office tells us they filed a motion to dismiss the case on Monday "based on the reason that we cannot prove the case beyond a reasonable doubt."
"Evidence developed in a way that did not support the charge to conclusion," the spokesperson said.
Charlo's attorney said in a statement Monday the 32-year-old was "very happy" with the decision.
"Nine witnesses came forward to say Charlo never hit his 21-year-old nephew," said Charlo's lawyer, Kent Schaffer. "Jermall is very happy. He can concentrate on preparing for his next fight now that this distraction has been removed."
Prosecutors tell us Jermell -- who was hit with a misdemeanor charge after he was accused of telling the alleged Jermall victim during the incident, "I will kill you with my bare hands" -- is still facing a misdemeanor charge of making a terroristic threat.
He's due in court for a hearing on the matter later this month.