(CNN) -- Floyd Mayweather Jr. saw off the obdurate challenge of Shane Mosley then renewed his challenge to Filipino star Manny Pacquiao to face him in a lucrative superbout.
Mayweather scored a unanimous points victory over the 38-year-old Mosley in Las Vegas to extend his perfect record to 41 fights, but the talk then turned to a possible fight later this year against Pacquiao.
The pair were due to contest what was predicted to be the richest contest in boxing history, but the match-up never materialized because of a disagreement over dope testing procedures.
Mayweather insisted that he was ready to meet Pacquiao but only on his terms.
"If Manny Pacquiao wants to fight, it's not hard to find me," he told reporters.
"If Manny Pacquiao will take the blood and urine tests, we can make the fight happen for all the fans."
The 33-year-old Mayweather dominated the welterweight contest against Mosley but was rocked by a heavy punch in the second round before taking control.
Watched by a multitude of celebrities and film stars, Mayweather pressed hard for a knockout win, but could not put away the battling Mosley, who survived to hear the judges' verdict despite a pummeling in the later rounds.
Mayweather paid tribute to the courage of his opponent while pleased with his own performance.
"I gave the fans what they wanted to see. They wanted to see me moving, and coming forward and that's what I did tonight.
"I went toe-to-toe. That's not my style but I wanted to give them that kind of fight and I knew I could do it.
"They wanted to see me moving, and coming forward and that's what I did.
"We should have pressed the attack a lot earlier and we could have got the knockout, but Shane Mosley is a tough customer and he is one hell of a fighter."
He also shrugged off his early difficulties against Mosley, who has 46 wins from a distinguished 52-fight career.
"That's all with the territory of boxing - only the strongest survive," he said.
"This is a contact sport, some time you are going to get hit with big shots, you must suck it up and keep fighting hard like a warrior."
But attention will now turn to a possible November fight against Pacquiao, who is standing as a candidate in elections in his native country later this month after beating Ghana's Joshua Clottey in his latest bout in March.