The apprentice brought the four-year-old, who is owned and trained by David Elsworth, with a rattling run from over a furlong out.
Ay Ay (3-1 co-favourite) came between horses and quickly hit the front to go on and score by three-quarters of a length from Pactolus. Calling Out was just a neck away in third.
Doyle told At The Races: "Things are going great. This horse has been running very well, but things haven't been going his way.
"He needs a nice even gallop and he settled beautifully well, he's maturing quite well now."
Elsworth explained how he came to own Ay Ay after originally training the Pour Moi gelding for Michael Tabor.
"He was owned by Michael Tabor and took a long time to mature mentally. We took him to the sales. I thought he was too cheap at about 30,000 and I ended up buying him," he said.
"He is sorting himself out mentally and is growing up all the time. The last twice he's run he seems to have got a move on too early and then didn't get home.
"Hollie rode him very well. She tucked him in and he did his running at the right time. He's improving."
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