Peyton Siva and Terrence Jones (Getty Images)Any heated rivalry can spark a fight among fans at an arena, a stadium parking lot or a sports bar.

Only Kentucky-Louisville, however, can lead to fisticuffs at a dialysis clinic.

Five days before the Wildcats and Cardinals square off for the just fifth time in the NCAA tournament and the first time in the Final Four, a fist fight over who will win the game erupted between two dialysis patients at a clinic in Georgetown, Ky. WKYT-TV has the hilarious details of what started the scuffle:

"He just happened to think UofL would beat UK and he started to run his mouth," explained dialysis patient Ed Wilson. Wilson also happens to be a self-proclaimed die hard UK fan. "That's what started it."

But Charles Taylor, who was waiting to get hooked up to a machine saw things differently. "I didn't talk to him about the ball game; I was talking to another guy about the game," The UofL fan exclaimed. "He was meddling. And told me to shut up and gave me the finger!"

[ Dan Wetzel: Coaches' stakes flip in Kentucky-Louisville Final Four showdown ]

Neither man was arrested, nor did either bother to file charges. Wilson even apologized afterward, though he admitted to WKYT that he hoped Taylor "won't come [to the clinic] at the same time as me anymore."

So far this is easily the best Kentucky-Louisville rivalry story of Final Four week, but it's only Tuesday. Mix in Bourbon Street, late-closing New Orleans bars and thousands of fans from both teams, and I have high hopes we'll top this.

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