The "Spider-Man" star revealed his golf injury in the Instagram stories section of his official account on Monday.
"Whoever says golf is not a physical contact sport is full of lies," wrote the caption in a photo, which showed a red bruise near his hairline. "You can almost see dimples."
This photo also contains a link to his father Dominic Holland's Patrion account.
"Read it and smile," it said.
Holland and his Miss Love/Spider-Man partner kept their relationship very secret, but in January, he shared with Extra that they "would watch Spider-Man 1 from time to time and recall making those movies again when they were 19."
"I like those movies and I like to savor those moments, so I try not to watch them as often as I think, because they are so special," he said. "It is a luxury and a gift to be able to sit down and relive your youth."
Zendaya is currently starring in the film Challenger and is one of the co-hosts of this year's metropolitan opera. On Tuesday, Holland shared a photo of her at the event on his Instagram account.