Keegan Crawford's future on The Block is in doubt after an on-set injury, with question marks on whether his brother Dylan can go it alone.
The teams were competing in an "odd job" challenge when Crawford was tackled by a rugby player.
"One of the players gave it 120 per cent and absolutely smoked me into the ground and I felt/heard a crack and a pop and knew something was wrong," Crawford told Spy.
"It felt like I had been hit by 120kg of angry footy player. Everyone around me paused for a second, then I got up and kept on going — I had a job to do."