His most well - known fights were his losses to Sugar Ray Leonard and Marvin Hagler , but he generated incredible torque and power from his punches .
Hearns was probably at his best as a welterweight .
Hearns ' most well - known fights were his losses to Sugar Ray Leonard and Marvin Hagler , but he generated incredible torque and power from his punches .
Hearns was probably at his best as a welterweight .