Floyd Mayweather Jr. (right) lands a left to the head of Miguel Cotto during their WBA super welterweight title fight at the MGM Grand in Las Vegas on May 5. Mayweather won the WBA super-welterweight title in a 12 round unanimous decision.  (AP photo)

MANILA — Floyd Mayweather Jr. outfought Miguel Cotto in Las Vegas on May 5 and crowned himself the new WBA super-welterweight champion.

Then the undefeated superstar, as expected, and as he had done many times before, called out Manny Pacquiao’s name.

“If you’re the best, take the test,” was Mayweather’s challenge.

Pacquiao had just arrived in Los Angeles from the Philippines when the opening bell for Mayweather versus Cotto rang at the packed MGM Grand.

Pacquiao knew Mayweather would call him out once he was done with Cotto because there’s really nothing else the 35-year-old American could do other than that.

But Pacquiao is not to be drawn because he has a June 9 fight with Timothy Bradley, another undefeated American, to look forward to.

“Focus muna tayo kay Bradley (Let’s focus first on Bradley),” he said.

Besides, the fighting congressman from the province of Sarangani had said a thousand times before that he’s not backing off from a fight with Mayweather.

Hindi naman ako umuurong sa kahit na anong laban basta magkasundo sa terms (I never back out from any fight as long as it’s on even terms),” Pacquiao said.

The eight-division world champion also said he doesn’t need Mayweather because he achieved everything as a boxer without the latter’s help.

“Of course, I want the fight with Mayweather. But if it does not happen, then I’m fine,” Pacquiao, the WBO welterweight king, said.

Pacquiao said he’s open to random drug testing, as long as it’s not done on the day of the fight, but certainly he’s not open to Mayweather’s getting the lion’s share of the purse.

A Pacquiao versus Mayweather fight could generate as much as $200 million in revenues.

Mayweather called Pacquiao a million-dollar fighter, and when they spoke over the phone a couple of months ago, he offered the Filipino $40 million just to make the fight happen.

But Mayweather insisted that Pacquiao shouldn’t get anything more from the pay-per-view sales.

Of course, the Filipino camp found it unacceptable.

Pacquiao’s promoter, Bob Arum, has floated the idea of a 45-45 split of the total revenue, with the winner getting the remaining 10 percent.

It’s never been done before in a blockbuster fight, and many thought it makes sense in this case, when an even 50-50 split is the better or the best way to do it.

On the first week of June, Mayweather enters a county jail for a three-month sentence following a domestic violence case.

With good behavior, he could be out sooner.

Mayweather will be “out of circulation” for some time, and to make sure he’d be talked about while he’s in jail, he had to air a new challenge to the Filipino champion.

At the post-fight press conference, Mayweather also hinted of a second retirement, saying, “I do not know if this is it.”

Mayweather faced HBO boxing analyst Larry Merchant on top of the ring, following his unanimous decision against the heavy-handed boxer from Puerto Rico.

“Are you willing to come off from what you say is your strong position that you have to get 60 percent against Pacquiao?” Merchant asked.

“Especially when you are likely to have huge pay-per-view numbers tonight,” the respected HBO analyst went on.

Mayweather answered even before Merchant could finish the question.

“Like I’ve said before I’ve been trying to make the Pacquiao fight,” he said, somehow evading the question concerning the purse split.

“Miguel Cotto didn’t have a problem taking the regular blood and urine test. So why shouldn’t he? If you’re the best, take the test. Let us give the fans what they want to see,” Mayweather said.

There was no time for Merchant to ask Mayweather at which weight he’d fight Pacquiao.

Mayweather can insist on 154 lb.

That’s not going to happen.