Tulisa Contostavlos's boyband were the first victims of tonight's double boot, finishing bottom of the public vote after failing to impress with last night's rendition of Shalamar's 'A Night To Remember'.
Asked by host Dermot O'Leary where they thought they had gone wrong, Risk member Derry Mensah replied: "I don't know what it is, I'm just happy that we're here together."
Frontman Charlie Healy confirmed that the band planned to "carry on" together, while Andrew Merry added: "It's been an absolute honour to sing with these guys, it's been an amazing experience. Thanks to everyone who's helped us along the way."
After The Risk exited the competition, their fellow bottom three members Robinson and Kitty Brucknell did battle in the sing-off for the judges' votes.
Robinson chose to sing the Righteous Brothers' 'Unchained Melody', while Brucknell opted for a cover of Kelly Clarkson's 'Beautiful Disaster'.
O'Leary then came to mentor of both acts Louis Walsh first, where the Irish music manager praised the pair for their "incredible" performances over the last few weeks.
"I have to save the person I think in the real world who would get a recording contract and go further," he explained. "I'm not going to cop out, I'm going to make a decision and the act I have to send home is Johnny."
Contostavlos also spared Brucknell for similar reasons, saying that she went with "the act that I look forward to watching perform the most each week".
Kelly Rowland cast the deciding vote that sent Robinson home and urged the voting public to think about which of the remaining contestants had a genuine chance of succeeding in the music industry.
She said: "I would like for everybody to make sure that they put on a real hat and say, 'Whose album am I going to buy? Who am I going to see in concert? Who's going to completely entertain me when I'm on stage? Whose career can I follow and be excited about?'"
She further argued while casting her vote that Brucknell would "continue to provide us something more in this competition".
Gary Barlow confirmed that he would also have sent home Johnny, but praised the 45-year-old for being "one of the nicest people in the competition".
The result confirmed, an emotional Walsh joined Robinson on stage and declared: "This guy is a brilliant guy, he's a great character and he's going to have a great career. I'm really proud of [him], I love working with him. I hate to see him going home."
As Walsh burst into tears and pulled him in for a hug, Robinson thanked "everybody in the UK that accepted me for just being me".
The X Factor continues next Saturday (November 12) at 8.15pm on ITV1.