Keith "One Time" Thurman's confidence level is up after his win against former world champion Luis Collazo in Florida. In fact, he believes that he is ready to face Floyd Mayweather Jr.

The World Boxing Association "Regular" Welterweight Champion was able to defend his title on Saturday night through an early combative performance in the first four rounds that resulted to a TKO victory just after the eight round started, CBS Sports reported.

Collazo, who became the 26th casualty of the unbeaten opponent that night, decided to throw in the towel because the cut on his right eye made it hard for him to see and focus well. Rather than be floored by "some unnecessary shots," the New York-born challenger reportedly just faced defeat.

The Florida native champion was elated when he emerged as the victor against the 34-year-old Collazo who was hungry for an upset, more especially that he crushed the challenger in his hometown.

"I felt good in there. I've been saying I'm an evolutionary fighter and I showed it tonight. I've always had power, but tonight was champ versus champ boxing," Thurman told reporters.

Now, the 26-year-old welterweight fighter is challenging the undefeated Mayweather Jr. for a showdown this September.

"If Floyd wants to take advantage, he should fight me now while I'm still learning. But I would do it and fight him next in 8 weeks. I'm young. They used to fight each other every other week in the old days. I like my paycheck, I'll go ahead and take another paycheck. He's about to retire, I'm not retiring anytime soon," Thurman told BoxingScene.com.

Thurman has 22 knockout wins out of 26, with an impressive KO rating of 85 percent. Yet, the warrior who reigned supreme over veteran boxers, like two-time world champion Julio Diaz in April 2014 and Roberto "The Ghost" Guerrero in March, said he is not afraid to forego his undefeated record.

"I enjoy the fight game... I have a '0,' I'm not afraid to let it go. If you can beat me, beat me," the successful WBA defender said, as quoted by BoxingScene.com in another article.

Thurman's challenge still mirrors his recent reaction shown on ThaBoxingVoice, when "The Money" named Karim Mayfield, with a win-loss record of 19-2, as his possible opponent in September, along with Andre Berto, who has 30-3.

"As soon as that man nicknamed himself 'Money' it's apparent what his interest is. It's money. Not legacy, not anything else man. He's all about the money. He wants to throw out a name like Karim Mayfield man? Like you know what I'm saying? Look at his record, look what he's done. And you want to say Keith 'One Time' Thurman isn't ready?" Thurman said, as quoted by National Sun Times.

Mayweather's camp's only reaction to Thurman is for the young boxer to seek bouts against fighters of his same age, but the WBA welterweight title holder isn't one to give up easily, as he replied that he'll "be waiting as long as he's [Mayweather Jr.'s] here," noted BoxingScene.com.