Whether it was that, or not, something clicked for Berrettini and even though he suffered an unfortunate abdominal injury at the Australian, his form has been strong since his return at the start of the clay-court season.
He won his fourth career title in Belgrade and then reached the final in Madrid. Three of his four titles have come on clay and though his one Grand Slam semi-final came on hard courts at the US Open, he looks totally at home on the red stuff.
The battle between light and dark, he said, will always be there.
“I think from the beginning of this year, I found the thing, it was the thing that brought me where I was, where I am now. Now I see that it's normal. Like it's ups and downs, like it's tennis," the 25-year-old explained.
“So when I struggle, I struggle. When I'm happy, I'm happy. But before it was a little bit too dark. I have to work, and I'm proud of what I have done. Now I'm really looking forward to play next tournaments, next matches, because at the end now I feel I'm back again.”