Tennis great Serena Williams has announced her engagement to the co-founder of social media website Reddit, Alexis Ohanian.

The 35-year-old winner of 22 grand slam singles titles arrived in New Zealand on Friday morning ahead of a WTA tournament next week, having penned a poem that she posted — of course — on her Reddit account.

She described the proposal in Rome, which is where they first met, and ended with: “Down on one knee/ He said 4 words/ And I said yes.”

Ohanian’s Wikipedia profile was quickly updated to reflect his newly-engaged status, with the new edit describing the 33-year-old American as “now the luckiest nerd of us all”.

The world number two, in Auckland for the first time to compete as she gears up for January’s Australian Open, has in the past been linked with rapper Drake, F1 driver Lewis Hamilton and actor Colin Farrell.

She and 33-year-old Ohanian, whose social news aggregation and discussion website Reddit calls itself “the front page of the internet”, reportedly started dating in September last year.