Stand Guard equalled the record of 25 wins on an all-weather surface when successful at Southwell.
The John Butler-trained 10-year-old joined China Castle, who set the standard in 2001, with an emphatic eight-length victory in the coral.co.uk Best Odds Guaranteed On Racing Selling Stakes.
Tom Queally settled the 10/11 favourite at the rear of the quartet as subsequent runner-up Conducting took his three rivals along before making his move just before the turn for home.
Soon in front, Stand Guard quickly pulled away to score easily.
"A good performance," Butler told At The Races.
"If we can hold him together now for another few races there should be another one or two wins in him before the end of the season.
"He got tired the last day after Lingfield, which was a bit worrying, but the last few days he's been very good.
"He's in here on Thursday but he's probably a doubtful runner and we'll probably come back for a race at Lingfield later in the month.
"We'll see how he is tomorrow and take it from there. It's going to take a serious a horse to break that record."
Queally said: "He's physically a big horse. He's got a bit of size, which is always a help.
"He's got character, he's very genuine and gives you everything. He's obviously had problems along the way, which is why he hangs badly.
"I'm glad he's won in the colours of the Clay family and there's no-one works harder than Johnny Butler."
There was no bid for the winner at the subsequent auction.