LEARNING

Serena Williams is a six-time champion at Flushing Meadows, most recently in 2014.

She has never played Anastasija Sevastova before.

Madison Keys was runner-up to Sloane Stephens in last year's US Open final.

Keys has played Osaka twice before, and won both times.

Their last meeting was at Indian Wells last year, when the American won 6-1, 6-4.

They have also clashed previously at the US Open - two years ago, when Keys came through a three-set battle 7-5, 4-6, 7-6(3).

TRENDING

READING

Naomi Osaka has the energy of a native New Yorker, according to the Washington Post.

The New York Times visited Anastasija Sevastova's homeland.

Elle magazine says Serena Williams's comeback is a win for moms everywhere.

ORDER OF PLAY

Check out today's full order of play.

WATCHING