Top-seeded Roger Federer and No. 4-ranked Serena Williams will highlight the Day 6 action of the 2012 U.S. Open on Saturday at Arthur Ashe Stadium.

Federer will face No. 25-ranked Fernando Verdasco of Spain at 11 a.m. at the tournament's center stage. Williams will face unseeded Russian Ekaterina Makarova in the afternoon after 1 p.m.

Other third-round matches of note are American Sloane Stephens facing No. 12-ranked and former world No. 1 Ana Ivanovic at 7 p.m. American No. 23-ranked Mardy Fish will take on No. 16-ranked Gilles Simon of France on the men's side.

Here are more notable third-round scheduled matches:

Arthur Ashe Stadium, 11 AM:

Women's Singles:

Jelena Jankovic (SRB) [30] vs. Agnieszka Radwanska (POL) [2]

Louis Armstrong Stadium, 11 AM:

Men's Singles:

Andy Murray (GBR) [3] vs. Feliciano Lopez (ESP) [30]

Sam Querrey (USA) [27] vs. Tomas Berdych (CZE) [6]

Women's Singles:

Dominika Cibulkova (SVK) [13] vs. Roberta Vinci (ITA) [20]

Angelique Kerber (GER) [6] vs. Olga Govortsova (BLR)

CBS Sports Network along with CBS Sports will be broadcasting all of the action from 11 a.m. to 6 p.m. The evening matches can be seen on the Tennis Channel from 7-11 p.m.

All times are Eastern.

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