British heavyweight Dereck Chisora failed to take the European title as German Agit Kabayel retained his belt with a majority points win.
In the lavish surroundings of Le Casino de Monte Carlo, 25-year-old Kabayel was by far the lighter on his feet.
And Londoner Chisora could find no solution to his opponent's movement.
The 33-year-old produced a defiant final round but Kabayel won 115-113 and 115-114 on two cards, with the third judge scoring the fight 114-114.
Chisora has lost three of his past five contests and seven in total in a 35-fight career stretching back to 2007.
"I'm not going to complain, I lost the fight," Chisora, who had targeted a rematch with British rival Dillian Whyte, told Sky Sports.
"I always bounce back so I'm not worried."
In a four-round super-lightweight fight, Harlem Eubank took a tumble in the opening round but won a majority points decision against Frenchman Aboubeker Bechelaghem.
The 23-year-old -cousin of Chris Jr - has won his first three fights as a professional.