2013 U.S. National Indoor Tennis Championships

The 2013 U.S. National Indoor Tennis Championships was an ATP World Tour and WTA Tour event held at the hardcourts of the Racquet Club of Memphis in Memphis, Tennessee, United States. It was the 38th edition of the U.S. National Indoor Tennis Championships and the 28th edition of the Memphis WTA International Event. The U.S. National Indoor Tennis Championships is part of the ATP World Tour 500 series on the 2013 ATP World Tour, and the Memphis International is an International-level tournament on the 2013 WTA Tour. The event took place from February 16 to February 24, 2013. Kei Nishikori and Marina Erakovic won the singles titles.

Prize money

 * per team

Seeds

 * 1 Rankings as of February 11, 2013.

Other entrants
The following players received wildcards into the main draw:
 * 🇺🇸 James Blake
 * 🇺🇸 Steve Johnson
 * 🇺🇸 Jack Sock

The following players received entry from the qualifying draw:
 * 🇷🇺 Alex Bogomolov Jr.
 * 🇺🇦 Illya Marchenko
 * 🇺🇸 Rhyne Williams
 * 🇺🇸 Donald Young

The following player received entry as a lucky loser:
 * 🇺🇸 Michael Russell

Withdrawals

 * Before the tournament
 * Kevin Anderson (elbow injury)
 * 🇺🇸 Brian Baker (knee injury)
 * 🇺🇸 Mardy Fish (heart problems)
 * Blaž Kavčič
 * 🇸🇰 Lukáš Lacko
 * 🇪🇸 Fernando Verdasco (neck injury)
 * During the tournament
 * 🇩🇪 Tommy Haas (illness)

Retirements

 * 🇧🇪 Xavier Malisse (back injury)
 * 🇦🇺 Marinko Matosevic (foot injury)

Seeds

 * 1 Rankings are as of February 11, 2013.

Other entrants
The following pairs received wildcard into the doubles main draw: The following pairs received entry as alternates:
 * 🇺🇸 James Blake / 🇺🇸 Jack Sock
 * 🇺🇸 Christian Harrison / 🇺🇸 Ryan Harrison
 * 🇨🇿 Jaroslav Levinský / Yen-Hsun Lu
 * 🇧🇪 Xavier Malisse / 🇦🇺 Marinko Matosevic

Withdrawals

 * Before the tournament
 * 🇺🇸 John Isner (knee injury)
 * 🇪🇸 Fernando Verdasco (neck injury)

Seeds

 * 1 Rankings as of February 11, 2013.

Other entrants
The following players received wildcards into the main draw:
 * 🇺🇸 Courtney Collins
 * 🇺🇸 Victoria Duval
 * 🇪🇸 Garbiñe Muguruza

The following players received entry from the qualifying draw:
 * 🇸🇰 Jana Čepelová
 * 🇫🇷 Claire Feuerstein
 * 🇺🇸 Madison Keys
 * 🇺🇸 Maria Sanchez

Withdrawals

 * Before the tournament
 * Anna Tatishvili

Retirements

 * 🇩🇪 Sabine Lisicki (gastrointestinal illness)

Seeds

 * 1 Rankings as of February 11, 2013.

Other entrants
The following pairs received wildcard into the doubles main draw: The following pairs received entry as alternates:
 * 🇩🇪 Stefanie Mikesz / 🇩🇪 Caroline Wegner
 * 🇺🇸 Taylor Townsend / 🇺🇸 CoCo Vandeweghe
 * 🇦🇺 Alyssa Hibberd / 🇺🇸 Tiffany Welcher
 * 🇺🇸 Ashley Murdock / 🇺🇦 Mariya Słupska

Withdrawals

 * Before the tournament
 * 🇰🇿 Ksenia Pervak (low back injury)
 * 🇷🇺 Valeria Savinykh (right shoulder injury)

Men's singles

 * 🇯🇵 Kei Nishikori defeated 🇪🇸 Feliciano López, 6–2, 6–3

Women's singles

 * 🇳🇿 Marina Erakovic defeated 🇩🇪 Sabine Lisicki, 6–1, ret.

Men's doubles

 * 🇺🇸 Bob Bryan / 🇺🇸 Mike Bryan defearted 🇺🇸 James Blake / 🇺🇸 Jack Sock, 6–1, 6–2

Women's doubles

 * 🇫🇷 Kristina Mladenovic / 🇰🇿 Galina Voskoboeva defeated 🇸🇪 Sofia Arvidsson / 🇸🇪 Johanna Larsson, 7–6(7–5), 6–3