Mark Cuban. Slaven Vlasic/Getty Images Billionaire businessman Mark Cuban live-tweeted the entire second presidential debate on Sunday night.

The owner of the NBA's Dallas Mavericks who stars on ABC's "Shark Tank" lambasted Republican nominee Donald Trump throughout Trump's political duel against Democrat Hillary Clinton.

Cuban had a front-row seat at the first debate last month courtesy of Clinton's campaign.

Cuban endorsed the Democratic nominee at a Pittsburgh rally in July, and he has since ripped Trump repeatedly on social media and in interviews, calling him the most "dangerous" presidential candidate he could imagine during a recent interview with Business Insider. Cuban last month offered Trump $10 million to hold a four-hour policy debate with him.

Cuban was more sympathetic about the prospect of a Trump presidency earlier in the cycle, at various points offering to serve as a running mate to either Trump or Clinton, but he soured on Trump's candidacy after Trump won the Republican nomination.

Here are Cuban's debate tweets: