Mark Cuban. Mike Nudelman/Business Insider Dallas Mavericks owner Mark Cuban had nothing but praise for fellow billionaire Donald Trump in a recent post on social media.

Cuban, writing on his Cyber Dust app, said the Republican presidential candidate was "probably the best thing to happen to politics in a long long time."

Trump, a real-estate magnate and television personality, has been at the center of a media firestorm since kicking off his campaign last month.

Trump generated reams of headlines while accusing the Mexican government of sending its country's criminals to the US. Trump also briefly questioned the war record of Sen. John McCain (R-Arizona).

But Cuban said the only thing that mattered was Trump breaking political orthodoxy by saying what was truly on his mind.

"I don't care what his actual positions are," Cuban wrote. "I don't care if he says the wrong thing. He says what's on his mind. He gives honest answers rather than prepared answers. This is more important than anything any candidate has done in years."

Indeed, the outspoken investor said Trump "changed the game."

"Up until Trump announced his candidacy the conventional wisdom was that you had to be a professional politician in order to run," Cuban continued. "You had to have a background that was politically scrubbed. In other words, smart people who didn't live perfect lives could never run. Smart people who didn't want their families put under the media spotlight wouldn't run. The Donald is changing all of that. He has changed the game and for that he deserves a lot of credit.

"Now maybe we will accept candidates warts and all and look at what they can do rather than what headlines they create," Cuban concluded. "Congrats Donald."

For his part, Trump thanked Cuban for the praise in a Twitter post on Tuesday. Trump also said he was becoming a fan of Cuban's basketball team: