Trump opened the debate with his devastating response to Rubio joking about the size of Trump's hands and saying "you know what they say about men with small hands".
Not surprisingly, Thursday's Republican debate began with a question to Donald Trump about Mitt Romney's speech earlier in the day slamming him as a "phony" who is unsafe for the United States' future.
"For this previous year, Donald Trump has basically mocked everybody with personal attacks", Rubiosaid, adding, "So if there is anyone who has ever deserved to be attacked that way, it has been Donald Trump".
Trump then noted that Rubio had mocked his hands as small and made an innuendo about Trump's sexual prowess.
"Look at these hands", Trump said, flashing his two hands to the crowd. "If they are small, something else must be small. I guarantee you, there is no problem", Trump said to hoots from the Detroit audience. Trump's supporters have weathered many political storms and there's really nothing that came out tonight that will change their minds.
Senator Cruz insisted "the stakes are too high" to let Mr Trump be the nominee, arguing that Democratic frontrunner Hillary Clinton would beat him at a general election.
Republican presidential candidates, Sen. When satirical magazine "Spy" called him a "short-fingered vulgarian" in a 1988 article, Trump reportedly responded to the editor with photographs to prove otherwise.
But while some Republican leaders now say they won't support Trump if he's the GOP candidate in November, Rubio, Cruz and Kasich promised to support the nominee, even if it's Trump.
The low blows started coming when Rubio alleged that many of Trump's business endeavors have failed.
Trump has made a name for himself throughout the campaign with his strong stance on immigration, saying he will build a wall on the border with Mexico and deport undocumented immigrants.
Cruz hits Trump for past support of politicians: "For 40 years, Donald has been part of the corruption you're angry about".
"I hate how he insults women, people of colour, and entire countries when it suits him".
Trump retorted, "This little guy has lied so much about my record".
Donald Trump, 69, was a huge victor on Super Tuesday, but he still has a long way to go before securing the Republican presidential nomination.
Rubio, seemingly amused by the new nickname he's earned, accused Trump of being incapble of having a substantive policy debate.
Kasich has largely steered clear of the anti-Trump effort and tried to remain above the fray.
The debate was the candidates' first face-to-face gathering since Super Tuesday nominating contests this week give extra momentum to Trump but did not knock out his rivals.
The once risky Tillekaratne Dilshan (18 off 16 balls) nowadays plays from the memory and looks a pale shadow of his old self. The Delhi lad remained not out on 56, with seven well-timed boundaries studding his 85-ball knock.
And then the American people will continue to ride that Trump train . "People don't want a short-term job", Trump said. Meanwhile, dozens of conservative national security experts are warning that Trump is unfit to be commander in chief.
On Thursday, dozens of conservative national-security leaders released a letter saying they would never vote for Trump . Rubio's rationale for why he'd support Trump was quite simple: the alternative would be the Democrats.
Although it's not a full-time job, the lucky person chosen will be paid $4,000 for the two weeks they work for the company. All you have to do is follow Netflix on Instagram and hashtag your top three pictures with #grammasters3 .
Pressing forward by taking a big step backward, " Fuller House " picks up predictably where " Full House " left off. If only the rest of the half-hour was made up of more moments like these and less shot for shot recreations.
Authorities say at least five people died tonight when a tractor trailer collided with an auto in Upper Macungie, Lehigh County. The fire spent a plume of thick, black smoke across the northbound lanes and high into the sky.