2021 Cary Challenger II

The 2021 Cary Challenger II was a professional tennis tournament being played on hard courts. It was the 8th edition of the tournament which was part of the 2021 ATP Challenger Tour. It took place in Cary, North Carolina, United States between 13 and 19 September 2021.

Seeds

 * 1 Rankings are as of August 30, 2021.

Other entrants
The following players received wildcards into the singles main draw:
 * 🇺🇸 Garrett Johns
 * Luca Stäheli
 * 🇺🇸 Zachary Svajda

The following players received entry from the qualifying draw:
 * 🇦🇺 Rinky Hijikata
 * 🇺🇸 Aleksandar Kovacevic
 * 🇯🇵 Shintaro Mochizuki
 * 🇺🇸 Alexander Sarkissian

Singles

 * 🇺🇸 Mitchell Krueger def. 🇺🇸 Bjorn Fratangelo 6–4, 6–3.

Doubles

 * 🇺🇸 William Blumberg / 🇺🇸 Max Schnur def. 🇺🇸 Stefan Kozlov / 🇨🇦 Peter Polansky 6–4, 1–6, [10–4].