A gambler shows his ticket after making a bet on Super Bowl XLIV at the Las Vegas Hilton sports book in Las Vegas, Nevada, February 4, 2010. REUTERS/Las Vegas Sun/Steve Marcus
A gambler shows his ticket after making a bet on Super Bowl XLIV at the Las Vegas Hilton sports book in Las Vegas, Nevada, February 4, 2010. Reuters/Las Vegas Sun/

Floyd Mayweather loves to brag his winning tickets on social media. Recently, he has been winning big in National Football League (NFL) betting. Mayweather's latest winning ticket had won him more than $1.5 million dollars.

On October 21, Mayweather posted a slip of his latest success in betting. He bet $800,000 on the Arizona Cardinals to beat the Oakland Raiders. The Cardinals trashed the Raiders, 24-13. It was Raiders' 12th consecutive loss. Mayweather collected $1,561,904.76.

Mayweather also won more than $1.4 million after betting on the Denver Broncos to beat the New York Jets by more than 7.5 points. He bet $815,000 to take home his impressive winnings. The Broncos beat the Jets, 31-17.

Mayweather has also bet on Seattle Seahawks to beat the Washington Redskins. The Seahawks beat the Redskins, 27-17. After betting $220,000, Mayweather walked away with $420,000.

What is more? The five-division world champion shared another winning ticket on Instagram on October 7. He won more than $1.4 million in one bet on the Indianapolis Colts. He bet $720,000 on the Colts to beat the Jacksonville Jaguars. The Colts crushed the Jaguars, 44-17.

Is Mayweather really lucky or does he possess a genuine ability to predict the winner? Does he get gambling tips from veteran pundits? Well, Mayweather wins some and then loses some.

Shortly after sharing a picture of his huge payday from Cardinals' victory over the Raiders, Mayweather posted a snap of a losing ticket. He said that he lost $20,000 after laying a bet on the Houston Texas. Unfortunately, the Texans lost to Pittsburgh Steelers, 23-30.

In 2012, Mayweather also lost in an NFL bet. According to Gambling 911, Mayweather wagered $100,000 on the Detroit Lions to win the first half against the St. Louis Rams, but the Lions failed to oblige.

Mayweather has been named as Forbes' Highest-Paid Ahtlete of 2014. His net worth is $105 million. Mayweather is the first athlete, aside from Tiger Woods, to surpass the $100 million earnings threshold. Losing $20,000 or even $100,000 is of less importance to Mayweather. It would be like losing a few bucks for an ordinary person.