Mark Williams beat Liam Highfield 6-5 in the fourth round of the UK Championship on Thursday evening.
In the eighth frame, with world number 106 Highfield leading 4-3, there was a remarkable exchange between the two players.
With the yellow and blue close to the top left pocket, Highfield knocked the final red on the table close to their position.
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What resulted was a cagey 21-shot exchange between the two which lasted four minutes and only ended when Highfield fouled by potting the yellow.
Williams would win the frame to draw level at 4-4 and would trail again before eventually claiming victory.
Williams will play Ronnie O'Sullivan in the quarter-final.
