Another joked, “The head tilt in disgust is frying me,” while someone else said, “This is sending me—they’re not even hiding it,” complete with laughing emojis.

One user pointed out, “George isn’t even looking Sinner in the eye,” and another added, “Kids are still honest—they haven’t learned how to fake it yet.”

Others chimed in with, “Kids are not impressed,” and, “There’s something refreshingly real about them. In time, they’ll learn how to mask it like all royals do.”

A Heartwarming Moment Nonetheless

Still, not everyone bought into the fan theories. Many saw the interaction for what it was: a kind and genuine moment between a rising sports star and two young members of the royal family.

“He signed a tennis ball for the future king of England. That’s got to be the highlight of his life,” one X user wrote admiringly.

Another added, “That was so kind of Sinner to do.”

“Such a sweet gesture. Sinner’s not just a great player—he’s a genuinely good person,” someone else commented.

Thoughtful Older Siblings

One especially touching detail fans loved? George and Charlotte didn’t just collect signed balls for themselves—they made sure to bring one home for their younger brother, Prince Louis, age seven, who didn’t attend the match.

Kate was heard telling Sinner, “We brought one for their brother as well,” to which William joked, “Louis would be very upset otherwise.”

A fan summed it up perfectly online: “Loved how they took one for their brother back home.”