He also made headlines for an amazing no-look trick-shot he pulled off to sink the green at the 2018 Snooker World Championships.
But today he did something few players could even imagine; potting the frame ball pink one-handed whilst snookered behind the black.
No, seriously, that did happen. Take a look further down the article to watch it in all its glory.
The Welsh Potting Machine, as he’s known, pulled off the remarkable feat in the first round of the 2022 Masters, which began today at Alexandra Palace.
Facing off against reigning champion Yan Bingtao, Williams quickly found himself trailing 3-1 in the match. Then, in the fifth frame, Williams found his magic touch.
Snookered brilliantly by Yan behind the black, the Welshman made a magnificent one-handed shot, clipping the pink perfectly off the cushion with a touch of side before dropping it into the yellow pocket.
The shot appeared to give Williams the upper hand as he went on to tie the match at three games apiece.
As of writing this article, the Welshman is leading 5-3.
The 46-year-old has been ranked the world number one player for a total of three seasons in his career (1999–00, 2000–01, and 2002–03), with his most successful season to date coming in 2002–03, when he won the Triple Crown.