Despite being two completely different competitions, boxing and mixed martial arts always seem to end up in the same conversation because they ultimately are the two most relevant combat sports in the world.
Many MMA fighters have dabbled in boxing over the years, and in turn a few boxers have tried their hand in MMA with limited success.
Boxing king Floyd Mayweather has never appeared to be a big fan of MMA for one reason or another. It could be MMA's growing interest on a national level that draws pay-per-view customers away from his sport, or it could be he's just not a fan.
In a 2009 interview ahead of his fight against Juan Manuel-Marquez, Mayweather said MMA "is for beer drinkers, boxing is for everybody."
He didn't stop there, however, and decided to draw a racial line in the sand when comparing boxing to mixed martial arts (via LasVegasSun.com):
In boxing, we know who's dominating. Black fighters and Hispanic fighters is dominating in this sport. And this is not a racial statement but there's no white fighters in boxing that's dominating, so they had to go to something else and start something new.
It's been four years since the time when Mayweather had made those controversial comments about MMA, and he seemed to have a much more passive approach when speaking about the sport in 2013. Most recently, MMA was brought up to Mayweather during an interview with host Jim Rome during his program on Showtime.
"I don't really know too much about the (UFC) Octagon, but everybody lives their life they way they live it," Mayweather said about MMA. "I'm a boxer. Born a boxer, I'm going to die a boxer."
Heading into his fight this weekend against Robert Guerrero, Mayweather opened up the can of worms about MMA one more time, however, when speaking about his opponent's style inside the ring. During an appearance on Showtime's All Access special, Mayweather took a shot at MMA while describing his opponent's particular type of fighting.
"From what I see, he's just a very, very dirty fighter," Mayweather stated about Guerrero. "There's nothing sharp about his fight game. Robert would be real, real good if he was a MMA fighter."
It appears Mayweather remains no fan of MMA or the skill set required to compete inside the cage, as evident by his latest comments about the sport.
Regardless of his feelings about the sport, Mayweather's fight this weekend against Guerrero will air unopposed of any other major MMA fight card, with the UFC schedule slowing down until May 18 when the promotion returns with UFC on FX 8 from Brazil.
Damon Martin is a Featured Columnist for Bleacher Report.