Unbeaten he may be, but even Floyd Mayweather Jr. isn't invincible. In hindsight it may seem as if the five-division champion hasn't erred at all in his 47-fight career, but when you step into the ring as much as Pretty Boy Floyd has, you are bound to have an off day.
Without taking a dig on his accomplishments, down below are six times when Mayweather looked wobbly and could've lost had his opponent been a bit more forceful or lucky.
1. Mayweather vs. Castillo I (2002)
In 2002, Mayweather fought and scored a unanimous decision win over Jose Luis Castillo even though it was the Mexican who landed more and cleaner punches. Granted, Mayweather clearly won the opening few rounds via his blinding hand speed, but Castillo weathered that storm and was clearly the busier fighter in the second half of the fight. While all three judges ruled in Mayweather's favor, unofficial ringside judge Harold Lederman and many others thought Castillo had done enough to retain his belts.
In a nutshell, Castillo clearly outpunched Mayweather over rounds, yet not even one judge ruled in his favor. A robbery? You bet.
2. Mayweather vs. Carlos Hernandez (2001)
Between 2001 and 2003, Mayweather suffered a series of hand injuries and fought nearly every fight battling pain. His fight with Carlos Hernandez was on one such bad night when both his hands were generating such excruciating pain that at one point he went down after throwing a left hook at his opponent. That remains the first and only knockdown of his career. What made matters worse for Money was that Hernandez was no slouch. In fact, a few years after this fight, he would go on to become the IBF Super Featherweight Champion.
But despite a quality opponent and two injured hands, Mayweather somehow earned a 12-round unanimous decision. He is not the kind who compliments his opponents, but regarding Hernandez he said: "He is a very, very tough fighter."
3. Mayweather vs. Maidana I (2014)
The fact that Mayweather gave Maidana a rematch following this bout tells how close an affair this was. For the first time in his career, the American champ had no answer for his heavy-handed opponent's power punches and aggression. Halfway through the fight, a historical upset seemed a distinct possibility as Maidana's wild assaults kept everyone on the edge of their seats. But Maidana couldn't keep up the same energy in the second half of the fight, and that allowed Mayweather's superior stamina to take over. Had Maidana paced himself well, he could've dethroned the American.
4. Mayweather vs. De La Hoya (2007)
Oscar De La Hoya was in the twilight of his career and Mayweather at his peak when this fight was fought. Still, the Golden Boy gave Money one of the toughest fights of his career. Using his size and greater reach, De La Hoya forced his opponent on the ropes and had manufactured a slim lead on the scorecards out of that advantage. Had De La Hoya still possessed the stamina of his heyday, he could've gone on to win this one. Instead, Mayweather came back and dominated the latter half of the fight, often toying with his tired opponent. Despite De La Hoya fading, one judge ruled in his favor. That remains the only split decision win of Mayweather's career.
5. Mayweather vs. Jesus Chavez (2001)
It's not often you hear commentators uttering things like, "This is not Mayweather's fight at all." Jesus Chavez was on a 31-fight winning streak and the way the first few rounds went, it seemed he might pull off a 32nd win too. What the Mexican pugilist game up in height – his was 5'5 to Money's 5'8 – made up for in volume of punches. He unleashed a barrage of punches right from the opening bell and troubled the then 24-year-old Mayweather so much that at least one commentator had him in the lead after the first few rounds. He hit Mayweather but got hit too in what was one of the most brutal punch fests of the American's career. In the end, Mayweather prevailed when for some reason Chavez's corner threw in the towel in the ninth round.
6. Mayweather vs. Shane Mosley (2010)
This eventually turned out to be a dominating, unanimous decision win for Mayweather. But one can't ignore that Sugar Shane came out firing on all cylinders in this bout and actually won the opening two rounds. At one point in the second round, Mosley's powerful punches connected so sweetly, it famously buckled Mayweather's knees. For a moment, a knockout seemed a distinct possibility. But Pretty Boy somehow survived that round before outpointing Mosley in the remainder of the fight.