2019 Kentucky Bank Tennis Championships – Men's singles

Lloyd Harris was the defending champion but chose not to defend his title.

Jannik Sinner won the title after defeating Alex Bolt 6–4, 3–6, 6–4 in the final.

Seeds
All seeds receive a bye into the second round. • # 🇨🇦 Peter Polansky (second round)

• # 🇦🇺 Alex Bolt (final)

• # 🇮🇹 Jannik Sinner (champion)

• # 🇦🇺 Andrew Harris (second round)

• # 🇰🇷 Lee Duck-hee (quarterfinals)

• # 🇯🇵 Yosuke Watanuki (withdrew)

• # 🇦🇺 Akira Santillan (quarterfinals)

• # 🇯🇵 Kaichi Uchida (second round)

• # 🇦🇺 Maverick Banes (third round)

• # 🇺🇸 J. J. Wolf (withdrew)

• # 🇦🇺 Aleksandar Vukic (second round)

• # 🇷🇺 Evgeny Karlovskiy (third round)

• # 🇺🇸 JC Aragone (semifinals)

• # 🇬🇧 Liam Broady (quarterfinals)

• # 🇺🇸 Collin Altamirano (second round)

• # 🇺🇸 Maxime Cressy (third round)