"We’ve been keeping a small secret…" the top-ranked British single's player wrote in her engagement announcement

Tennis pros Alex de Minaur and Katie Boulter are engaged! Boulter, 28, announced the news via Instagram on Monday. “We’ve been keeping a small secret … ,” she captioned a photo of her and de Minaur, 25,

He’s Australia’s number one ranking tennis player; she’s Britain’s number one ranked woman. If there was a tennis couple to care about, it’s verified legends Alex De Minaur and Katie Boulter. And they’ve just announced their engagement.