Stephens shows off huge engagement ring

Sloane Stephens posted two seemingly innocent selfies on Instagram, claiming she wasn't sure which lighting was better. But a closer look reveals she's actually showing off her new engagement ring in the first picture.

The rock is huge, there's no doubt about that, though the actual worth of it is not know. Stephens got engaged to pro soccer player Jozy Altidore in April.

But don't expect to see the bling on display during any of her matches.

"I wear it in the house for now, for comfort," she told Tennis Channel in Paris. "It's very nice."

She was wearing a different ring on her left index finger whilst off the court.

Stephens is ranked No. 9 going into the grass-court season.

Reflect on Roland Garros and look ahead to the grass season on the TENNIS.com Podcast: