Sky Sports said Littler matched Phil Taylor's Matchplay record average of 106.31 in Blackpool with an average of 111.04.
Sky Sports also reported that he had won every PDC title in 2026 so far, including the World Cup, and that he pointed to a possible drive for a majors clean sweep.
"I'm feeling very good. The clean sweep is very much on," said Littler.
BBC Sport reported that Littler was aware of comparisons to Phil Taylor, the 16-time world champion widely regarded as darts history's greatest player, and he said he remains himself.
He spoke after the mural unveiling in Warrington.
"It's amazing to see the comparisons with Phil Taylor, but I am just myself," said Littler.
Littler signed his name on the artwork and posed for photos with fans at the town centre.
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His next scheduled action was set for Leicester on the Pro Tour on August 25 and 26 at Players Championship 27 and 28, as he sought qualification for the Players Championship Finals in Minehead.
