The bout against Pacqauiao is the biggest in the career for the 32-year-old Clottey (pictured above, with trainer Lenny DeJesus), whose only losses were to former world champions, Carlos Baldomir, Antonio Margarito and Miguel Cotto.
Clottey never has been knocked out, and is known for his steller defense and punching accuracy.
Under new trainer, Lenny DeJesus, Clottey claims to be in the best shape of his life heading into the bout with Pacquiao.
"I have more confidence this time around because I'm taking this fight like if I win, I have bigger things ahead. I have so much respect for Manny, so that gives me more confidence because I respect the guy," said Clottey recently, telling FanHouse that he weighed 154 this past Thursday.
"I respect the guy because, if he has the chance, he can stop me," said Clottey. "So I respect him because of that, and because of that, I'm more confident."