Team GB have scored one penalty and missed another in the first half of their Olympic quarter-final against Korea, going into the break all square at 1-1.
The visitors continued to push on, and took the lead on the half-hour mark through Ji Dongwon's effort from range, which Butland will be disappointed not to have saved.
Team GB responded immediately, and were awarded a penalty just five minutes after going behind when Ryan Bertrand's shot struck Oh Jaesuk's hand. Aaron Ramsey stepped up and fired his spot kick through the keeper to level the sides.
Should the result stay the same, it will go to extra time and then, if necessary, to penalties to determine who will face Brazil in the semi-final.