Luc Greenwood raised to 500,000 from the cutoff and Peter Linton defended his big blind with a call.
They checked to the turn where Linton announced a pot-sized bet of 1.12 million. Greenwood wanted to call and he added one chip to his pile, thinking he would slide forward 1.1 million.
However, when he did so, he realized his mistake as he pushed forward 2.1 million and, unfortunately for him, it was declared a raise.
Linton moved all in for 4.66 million and Greenwood couldn't fold at that point.
Linton's two pair held after the river and the mistake cost Greenwood heaps of chips, allowing Linton to double into the lead.
"Oh my god," Greenwood lamented. "Oh, f***."
"Sorry, bro," Linton said.
"No, it's fine. It was my mistake. Sealed my own fate," Greenwood replied.