Floyd Mayweather may know who Ronda Rousey is, but he certainly doesn't seem to care.
In an interview with ESPN, Mayweather congratulated Rousey on winning the ESPY for Fighter of The Year and for what she's done in the UFC. He then quickly added a shot of his own saying "I've yet to see any MMA fighter or boxer make over $300 million in 36 minutes."
Even though these two fighter will probably never meet, it seems they're still more than willing to take jabs at each other.