Great Britain hockey coach Jason Lee blasted his players as 'gutless' after their 8-2 thrashing against Pakistan.
The loss meant Britain would have its worst Olympic finish in 36 years.
"This is as bad as it gets, this really is. We have had some poor performances during our time but this was the most gutless one," he said.
"I'm totally embarrassed. When it comes down to principles of pride, basic character and self-satisfaction they just couldn't find it today.
"There are just no excuses for anyone within the team. We were sloppy either
side of half-time and then it just completely fell to pieces.
"This is definitely the lowest point I have had with them.
"We tried to be professional but we just had a lethargic air around the group
before the game and it carried through."
Britain took a surprise fifth-minute lead when Niall Stott weaved through several weak tackles along the byline to squeeze a shot past Salman Akbar.
However, within four minutes Pakistan were level as Sohail Abbas' drag-flick went under the feet of the advancing Jimi Lewis, making his international debut in the British goal.
Britain continued to enjoy the better of the first period but right on the stroke of half-time Ghazanfar Ali put Pakistan ahead from a penalty corner.
And Pakistan struck early in the second half as Britain began to disintegrate.
They were soon 7-1 down before Hall grabbed a consolation goal five minutes from time.
Even then, Pakistan had the final say with Rehan Butt netting his second of the game late on.
Meanwhile, world champions Germany and Spain both reached the last four.
Meanwhile, Germany edged through after a 2-2 draw with South Korea.
Spain opened the scoring in the sixth minute of their game with Egypt through Eduardo Tubau but then had to wait until the 62nd minute before extending their advantage and going on to win 3-0.
Germany will now play the Netherlands, while Spain will play Australia.