2014 U.S. National Indoor Tennis Championships – Singles

Kei Nishikori was the defending champion and successfully defended his title, defeating Ivo Karlović in the final, 6–4, 7–6(7–0).

Seeds
The top four seeds receive a bye into the second round. • 🇯🇵 Kei Nishikori (champion)

• 🇪🇸 Feliciano López (second round)

• 🇦🇺 Lleyton Hewitt (quarterfinals)

• Lu Yen-hsun (semifinals, retired)

• 🇦🇺 Marinko Matosevic (first round)

• 🇺🇸 Sam Querrey (first round)

• 🇵🇱 Michał Przysiężny (first round)

• 🇰🇿 Mikhail Kukushkin (second round)

Seeds
🇧🇪 David Goffin (qualified) 🇺🇸 Denis Kudla (qualified) 🇺🇸 Alex Kuznetsov (qualified) 🇩🇴 Víctor Estrella Burgos (qualifying competition) 🇺🇸 Rajeev Ram (qualified) Gastão Elias (qualifying competition) 🇺🇸 Bobby Reynolds (qualifying competition) 🇮🇪 James McGee (qualifying competition)

Qualifiers
• # 🇧🇪 David Goffin

• # 🇺🇸 Denis Kudla

• # 🇺🇸 Alex Kuznetsov

• # 🇺🇸 Rajeev Ram