LeBron James hosted good friend Warren Buffett at Cavs game Monday

Warren Buffett's somewhat strange sports tour continued on Monday.

Buffett had taken in the Detroit Lions game on Sunday as a guest of Ndamukong Suh, and on Monday he watched the Cleveland Cavaliers, courtesy of LeBron James. Hey, mega-billionaires like sports, too, it turns out.

What's more interesting than Buffett watching the game courtside in a James jersey is the relationship the two share.

"It's unique," James said of the seven-year friendship. "It's very unique."

James and Buffett hugged before and after tip-off, with the 84-year-old Buffett joking about a hook shot he hit against James one time when they played a game of one-on-one.

The relationship isn't just some once-in-a-while public handshake, either. James and Buffett email regularly, and James even spent time at Buffett's home in Omaha. As far as growing his global brand goes, James could certainly have less useful friends than Buffett, who is worth an estimated $73.5 billion.