title: 2021 Knoxville Challenger – Doubles
text: # 2021 Knoxville Challenger – Doubles
  
  Hans Hach Verdugo and Adrián Menéndez Maceiras were the defending champions but only Hach Verdugo chose to defend his title, partnering Miguel Ángel Reyes-Varela. Hach Verdugo lost in the final to Malek Jaziri and Blaž Rola.
  
  Jaziri and Rola won the title after defeating Hach Verdugo and Reyes-Varela 3–6, 6–3, [10–5] in the final.
  
  ## Seeds
  
  * Hans Hach Verdugo / Miguel Ángel Reyes-Varela (final)
  * Treat Huey / Frederik Nielsen (first round)
  * Evan King / Hunter Reese (semifinals)
  * Robert Galloway / Alex Lawson (quarterfinals)
  
  ## Draw
  
  ### Key
  
  * Q = Qualifier
  * WC = Wild card
  * LL = Lucky loser
  * Alt = Alternate
  * SE = Special exempt
  * PR = Protected ranking
  * ITF = ITF entry
  * JE = Junior exempt
  * w/o = Walkover
  * r = Retired
  * d = Defaulted
  * SR = Special ranking
  
  | First round | First round | First round | First round | First round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final | Final |
  | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
  | 1 | H Hach Verdugo MÁ Reyes-Varela | $6^3$ | $7^7$ | [10] | | | | | | | | | | | | | | | |
  | WC | Emile Hudd Shunsuke Mitsui | $7^7$ | $6^4$ | [6] | 1 | H Hach Verdugo MÁ Reyes-Varela | 6 | 2 | [12] | | | | | | | | | | |
  | WC | M Damm G Nanda | 4 | 4 | | | J Jung M Krueger | 3 | 6 | [10] | | | | | | | | | | |
  | | J Jung M Krueger | 6 | 6 | | | | | | | 1 | H Hach Verdugo MÁ Reyes-Varela | 6 | 5 | [10] | | | | | |
  | 3 | E King H Reese | $7^7$ | 6 | | | | | | | 3 | E King H Reese | 3 | 7 | [2] | | | | | |
  | Alt | D Marrero Y Uchiyama | $6^3$ | 4 | | 3 | E King H Reese | $7^9$ | 4 | [14] | | | | | | | | | | |
  | | C Harrison N Lammons | $6^7$ | 4 | | | T Sandgren M Torpegaard | $6^7$ | 6 | [12] | | | | | | | | | | |
  | | T Sandgren M Torpegaard | $7^9$ | 6 | | | | | | | | | | | | 1 | H Hach Verdugo MÁ Reyes-Varela | 6 | 3 | [5] |
  | | A Kadhe R Roelofse | 3 | 6 | [6] | | | | | | | | | | | | M Jaziri B Rola | 3 | 6 | [10] |
  | | M Jaziri B Rola | 6 | 4 | [10] | | M Jaziri B Rola | 6 | 6 | | | | | | | | | | | |
  | WC | Martim Leote Prata J Monday | 3 | 4 | | 4 | R Galloway A Lawson | 2 | 2 | | | | | | | | | | | |
  | 4 | R Galloway A Lawson | 6 | 6 | | | | | | | | M Jaziri B Rola | 6 | $6^6$ | [11] | | | | | |
  | | JC Aragone D Novikov | 1 | 3 | | | | | | | | R Gonzales C Rungkat | 3 | $7^8$ | [9] | | | | | |
  | | R Gonzales C Rungkat | 6 | 6 | | | R Gonzales C Rungkat | 6 | $7^8$ | | | | | | | | | | | |
  | | W Blumberg M Schnur | $7^7$ | 6 | | | W Blumberg M Schnur | 4 | $6^6$ | | | | | | | | | | | |
  | 2 | T Huey F Nielsen | $6^3$ | 2 | | | | | | | | | | | | | | | | |
  