1984 U.S. Pro Tennis Championships – Singles

José Luis Clerc was the defending champion, but lost in the final to 16-year old Aaron Krickstein. The score was 7–6, 3–6, 6–4.

Seeds
The top eight seeds receive a bye into the second round. • # 🇺🇸 Jimmy Arias (quarterfinals)

• # 🇪🇨 Andrés Gómez (semifinals)

• # 🇦🇷 José Luis Clerc (final)

• # 🇪🇸 Juan Aguilera (second round)

• # 🇦🇷 Guillermo Vilas (quarterfinals)

• # 🇺🇸 Aaron Krickstein (champion)

• # Diego Pérez (second round)

• # 🇺🇸 Mel Purcell (third round)

• # Libor Pimek (third round)

• # 🇺🇸 Mark Dickson (third round)

• # 🇵🇪 Pablo Arraya (third round)

• # 🇪🇸 Fernando Luna (third round)

• # 🇺🇸 Jimmy Brown (second round)

• # 🇦🇺 Brad Drewett (second round)

• # 🇧🇷 Cássio Motta (second round)

• # 🇦🇷 Roberto Argüello (second round)