do a Devon Loch(redirected from done a Devon Loch)
do a Devon Loch
To achieve a sudden and unexpected failure or loss at the last minute, especially in sports. (Devon Loch was a horse poised to win the 1956 Grand National when he suddenly leapt and fell, ultimately losing the race.) They were up by three goals, but then they did a Devon Loch in the last few minutes of the match.
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