Floyd Mayweather may have knocked out Victor Ortiz last night, but he was apparently still itching for a fight afterward ... with sportscaster Larry Merchant.
During the post-fight interview, Floyd started absolutely screaming at HBO's 80-year-old ringside reporter, yelling, "You never give me a fair shake."
"HBO need to fire you," the fighter continued, all up in Merchant's grill. "You don't know $h!t about boxing. You ain't $h!t! You're not $h!t!" Yikes. See below.
Larry Merchant didn't back down, barely even flinching at the outburst and telling the champ: "I wish I was 50 years younger and I'd kick your a$$."
Damn, Mayweather. Who knew, you won by KO, but you still got served.
At least he didn't bring up Floyd's apparent history of wailing on women.