Britain's Jamie McDonnell retained his WBA world bantamweight title as his rematch with Liborio Solis ended in a technical draw after a clash of heads.
McDonnell, 31, was left covered in blood after sustaining a cut above his left eye, and the fight in Monte Carlo was stopped in the third round.
As four rounds had not been completed, the bout was declared a no-contest.
McDonnell said afterwards this was his last fight in the division, and that he will move up to super-bantamweight.
Venezuela's Solis, who lost a controversial points decision to McDonnell at Salle des Etoiles in Monte Carlo a year ago, made the more purposeful start in the opulent surroundings of Le Casino in the heart of the principality.
The 35-year-old bloodied McDonnell's nose in round two, and when it became clear the champion's cut would soon end proceedings, both men launched into a flurry of punches.
"I knew they were going to stop it so I came out for a knockout," a distraught McDonnell told Sky Sports. "If it had gone another round, I felt I would have done it.
"I feel like crying, I'm disappointed because I know how good I could be.
"I wanted to finish with a bang before I move up but that's my last fight at bantamweight. I'll enjoy Christmas, see if I can get a straight shot at super-bantamweight, or see what else comes up."
The Yorkshireman has lost only two bouts and remains undefeated since 2008.
Quigg wins featherweight eliminator
In an eliminator for the WBA world featherweight title, Britain's Scott Quigg became the first man to stop Ukraine's Oleg Yefimovich, with an impressive sixth-round victory.
The 29-year-old from Bury, beaten only once in 37 bouts, had too much firepower for the 36-year-old, a former two-time European champion, and is now the mandatory challenger.
Promoter Eddie Hearn said there could be a shot at the world title next year, adding "while there is a log jam domestically, let's move round the back and go and become a world champion stateside".
In a four-round super-lightweight fight, Harlem Eubanktook a tumble in the opening round but won a majority points decision against Frenchman Aboubeker Bechelaghem.