Gai Waterhouse, now in partnership with Adrian Bott, became the most successful trainer in Golden Slipper history when Farnan delivered her seventh at Rosehill on Saturday.

Less than two hours later, Gwenda Markwell defended home turf when talented filly Electric Girl refused to yield in the Kembla Grange Provincial Championships qualifier.

Both overcame tricky barriers and produced gritty, bold on-pace efforts to claim the prize.

Their loyal subjects, the punting public, were locked out as part of sweeping Coronavirus measures.

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Even Gai herself stayed home, uploading a video cheering on from the lounge after Farnan won, far removed from her usual race day glamour and beaming smile.

In contrast, Gwenda was at Kembla Grange and in her understated way, was delighted with just how tough Electric Girl was when it mattered, holding off a fierce challenge from the Tracey Bartley-trained McCormack.

"She certainly knows how to win a race," Markwell told Sky Racing.

"I said to (jockey Travis Wolfgram), be a little bit positive, I know she's got a lot of speed and the light weight on her back. You don't want her back in a crowd of horses, so he rode her a treat."

Electric Girl is now third favourite for the Provincial Championships final - to be run at Randwick on April 11 - at $11, behind the Kris Lees-trained Asharani, who won the relocated Gosford heat at Newcastle on Thursday, with Kim Waugh's Trumble next at $8. Lees had four horses in Saturday's qualifier, with Enchanted Heart booking her ticket for the final by finishing third.

Wolfgram had tracked Electric Girl's stablemate Pioneer into the race and managed to tuck in one back and one off the rail, before peeling off into the big Kembla Grange straight.

She looked vulnerable at the 200m as the challengers came, but kept finding in the final bounds to win by a long neck. It was her fourth success in seven starts, including the past three in a row.

"I went into a lovely position in the one-one," Wolfgram said. "I couldn't believe t, I always felt like I travelled like the winner.

"She's only going to get better, it was a good tough win, I was out on my legs and I had every right to get beat, but she's got a heart of gold and she dug deep."