Floyd Mayweather Jr. has never lost a fight. The 37-year-old is 47-0 and considered the best pound-for-pound fighter in the world. 

His biggest competition would be Manny Pacquiao, which is why people are so eager to see the two fight.

According to promoter Bob Arum, however, the above reasons are precisely why Mayweather is avoiding a bout with Pacquiao.

"The real problem is that Mayweather is so damn smart when it comes to boxing and he realizes that of all the fighters fought and all the fighters out there that Manny poses the biggest threat. Why? Because Manny is fast, Manny can punch and Manny is left handed. Floyd never wants to fight a left handed fighter because his style is designed to fight orthodox fighters," Arum told World Boxing News last week.

"So to get Mayweather in the ring with Pacquiao is a monumental task. Not because of splits, not because of money, because Manny stands the best chance of anybody that Floyd has faced to beat him."

There has been so much talk between the two fighters in recent months about stepping into the ring together -- mostly jabs on social media, really -- though no real movement has been made towards setting a date. Perhaps we now know why.


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