2016 Ricoh Open – Men's singles

Nicolas Mahut was the defending champion and successfully defended his title, defeating Gilles Müller in the final, 6–4, 6–4.

Seeds
The top four seeds receive a bye into the second round. • #🇪🇸 David Ferrer (quarterfinals)

• #🇦🇺 Bernard Tomic (quarterfinals)

• # Ivo Karlović (semifinals)

• #🇺🇸 Steve Johnson (second round)

• #🇺🇸 Sam Querrey (semifinals)

• #🇮🇹 Andreas Seppi (first round)

• #🇱🇺 Gilles Müller (final)

• #🇫🇷 Nicolas Mahut (champion)

Seeds
• # 🇷🇺 Konstantin Kravchuk (qualifying competition)

• # 🇸🇰 Lukáš Lacko (qualified)

• # Marco Chiudinelli (qualifying competition)

• # 🇺🇸 Austin Krajicek (qualifying competition)

• # 🇩🇪 Mischa Zverev (first round)

• # 🇺🇸 Dennis Novikov (qualified)

• # 🇺🇸 Ryan Harrison (first round)

• # 🇨🇴 Alejandro Falla (qualifying competition)

Qualifiers
• # 🇷🇺 Daniil Medvedev

• # 🇸🇰 Lukáš Lacko

• # 🇺🇸 Ernesto Escobedo

• # 🇺🇸 Dennis Novikov