The worst of his problems came in 2008 when Mayweather faced a series of financial disasters.
That same year the sportsman publicly announced his retirement from boxing - only to be sensationally duped by a conman called 'Three comma Joe' in an elaborate scam.
The alleged fraudster convinced Mayweather to hand over a staggering $15million to him for a get quick rich scheme.
Mayweather was told it would make him a $5 billion return. Unsurprisingly the man ran off with his cash.
Weeks later burglars robbed his luxury mansion in Vegas stealing an estimated $7million in jewelry alone.
The IRS were also chasing him for an unpaid $6.2 million tax bill.
Tasha said: 'It was a tough time for Floyd. The biggest blow was being scammed out of $15million.
'Floyd met with a group of middle-men who introduced him to a guy called Three Comma Joe.
'He was impressed by Joe, he came in with the flossy blonde girl, he wore a nice big icy watch, he had the flash and Floyd was like, 'that's my kind of guy'.
'After the deal was done they shook hands and began to hang out a lot, they were inseparable.
'Floyd wired $15million to a Canadian bank account and he was told to see a return very soon.
'But eventually Joe left Vegas and stopped returning phone calls, and the money train came to an abrupt halt. Nobody could find Joe, and no one could find Floyd's money.
'Not the $15 million Floyd originally invested, and definitely not the $5 billion he was promised to make in return. Life in the Mayweather camp got really nasty for everybody.'
Tasha tells how furious Mayweather hired a team of private investigators to look for Three Comma Joe.
And she says at one point he took her, his girlfriend and two burly security men on a failed mission to retrieve his missing cash from Joe's attorney's office in Vancouver.
By the time she stopped working for him, Mayweather had not seen a cent of the $15million.
Around the same time, in August 2008 Mayweather's home was robbed and the thieves stole $7 million in jewelry.
The series of events deeply affected Mayweather – voted the world's highest-paid athlete for 2011, 2012 and 2013 by Forbes - and he was forced to come out of retirement to 'maintain the lifestyle he had', says Tasha.
Read more:
Bizarre world of Floyd Mayweather, by his right hand woman | Daily Mail Online
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