What's on tap for Sunday?

It's the end of Week One of the tournament and we're getting down to the good stuff. Here's what we've got today:

Ashe Stadium

Ana Ivanovic vs. (2) Kim Clijsters

(16) Shahar Peer vs. (3) Venus Williams

(1) Rafael Nadal vs. Gilles Simon

Armstrong Stadium

(6) Francesca Schiavone vs. (20) Anastasia Pavlyuchenkova

(20) Sam Querrey vs. (14) Nicolas Almagro

(4) Andy Murray vs. (25) Stanislas Wawrinka

Grandstand

(31) David Nalbandian vs. (8) Fernando Verdasco

(23) Feliciano Lopez vs. Sergiy Stakhovsky

Tommy Robredo vs. Michael Llodra

Lots of good stuff there to follow during the day today, so stay tuned for things to start within the hour.