Just doing some research on Langford and came across this,
One story characterizing his career involved Langford in a bout where he had been ordered not to throw any knockout punches until after the 7th round. So walking out for the 8th round, after 21 minutes of patting away, Langford touched gloves with his opponent. "What's the matter, Sam, it ain't the last round!" said his mystified opponent. "Tis for you son," said Langford, who promptly knocked his opponent out. Another story involves Langford at a fight where just before it began he apologized to the audience and said he would have to make it a quick fight as he had a train to catch very soon. He then knocked out his opponent within the first round, apologized to the audience once again and left, just in time to catch his train.

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