title: 2023 Monterrey Challenger – Singles
text: # 2023 Monterrey Challenger – Singles
  
  Fernando Verdasco was the defending champion but chose not to defend his title.
  
  Nuno Borges won the title after defeating Borna Gojo 6–4, $7–6^{(8–6)}$ in the final.
  
  ## Seeds
  
  * Adrian Mannarino (first round)
  * Emilio Gómez (second round)
  * Denis Kudla (quarterfinals)
  * Daniel Altmaier (quarterfinals)
  * Christopher Eubanks (first round)
  * Nuno Borges (champion)
  * Taro Daniel (second round)
  * Yosuke Watanuki (semifinals)
  
  ## 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
  
  ### Finals
  
  | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
  | - | - | - | - | - | - | - | - |
  | | Borna Gojo | $7^7$ | 6 | | | | |
  | 8 | Yosuke Watanuki | $6^5$ | 4 | | | | |
  | 8 | Yosuke Watanuki | $6^5$ | 4 | | Borna Gojo | 4 | $6^6$ |
  | | | | | 6 | Nuno Borges | 6 | $7^8$ |
  | 6 | Nuno Borges | $7^7$ | $7^7$ | 6 | Nuno Borges | 6 | $7^8$ |
  | | Mitchell Krueger | $6^3$ | $6^3$ | | | | |
  
  ### Top half
  
  | First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
  | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
  | 1 | A Mannarino | 5 | $6^4$ | | | | | | | | | | | | | | |
  | | A Kovacevic | 7 | $7^7$ | | | A Kovacevic | 6 | 6 | | | | | | | | | |
  | | N Mejía | 6 | 1 | 6 | | N Mejía | 3 | 2 | | | | | | | | | |
  | | S Mansouri | 4 | 6 | 3 | | | | | | A Kovacevic | $6^5$ | 6 | 2 | | | | |
  | | B Gojo | 6 | $7^7$ | | | | | | | B Gojo | $7^7$ | 3 | 6 | | | | |
  | WC | R Pacheco Méndez | 3 | $6^3$ | | | B Gojo | 6 | 6 | | | | | | | | | |
  | | S Johnson | 4 | 6 | 3 | 7 | T Daniel | 2 | 4 | | | | | | | | | |
  | 7 | T Daniel | 6 | 3 | 6 | | | | | | | | | | | B Gojo | $7^7$ | 6 |
  | 3 | D Kudla | 6 | 6 | | | | | | | | | | | 8 | Y Watanuki | $6^5$ | 4 |
  | | M Bellucci | 2 | 4 | | 3 | D Kudla | 6 | 6 | | | | | | | | | |
  | Q | N Chappell | 6 | 6 | | Q | N Chappell | 3 | 4 | | | | | | | | | |
  | Q | J Flores | 3 | 2 | | | | | | 3 | D Kudla | 6 | $6^3$ | 2 | | | | |
  | WC | E Escobedo | 6 | 2 | 2 | | | | | 8 | Y Watanuki | 3 | $7^7$ | 6 | | | | |
  | | B Paire | 2 | 6 | 6 | | B Paire | $6^2$ | 1 | | | | | | | | | |
  | WC | James Van Deinse | 0 | 1 | | 8 | Y Watanuki | $7^7$ | 6 | | | | | | | | | |
  | 8 | Y Watanuki | 6 | 6 | | | | | | | | | | | | | | |
  
  ### Bottom half
  
  | First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
  | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
  | 6 | N Borges | 6 | 6 | | | | | | | | | | | | | | |
  | PR | B Klahn | 2 | 2 | | 6 | N Borges | 6 | 6 | | | | | | | | | |
  | Q | E Zhu | $7^7$ | 5 | 6 | Q | E Zhu | 2 | 4 | | | | | | | | | |
  | | T-l Wu | $6^2$ | 7 | 4 | | | | | | 6 | N Borges | $7^7$ | 6 | | | | |
  | | M Marterer | 6 | 6 | | | | | | | 4 | D Altmaier | $6^2$ | 4 | | | | |
  | | G Elias | 3 | 4 | | | M Marterer | $6^1$ | 3 | | | | | | | | | |
  | | B Holt | $6^4$ | 3 | | 4 | D Altmaier | $7^7$ | 6 | | | | | | | | | |
  | 4 | D Altmaier | $7^7$ | 6 | | | | | | | | | | | 6 | N Borges | $7^7$ | $7^7$ |
  | 5 | C Eubanks | 4 | 3 | | | | | | | | | | | | M Krueger | $6^3$ | $6^3$ |
  | Q | G Andreozzi | 6 | 6 | | Q | G Andreozzi | 3 | $1^r$ | | | | | | | | | |
  | | M Krueger | 6 | 5 | 6 | | M Krueger | 6 | 2 | | | | | | | | | |
  | | S Diez | 4 | 7 | 4 | | | | | | | M Krueger | 6 | 2 | | | | |
  | Q | B Tomic | $7^7$ | 6 | | | | | | | Q | B Tomic | 4 | $1^r$ | | | | |
  | | JP Ficovich | $6^3$ | 1 | | Q | B Tomic | 4 | 6 | $7^7$ | | | | | | | | |
  | Q | D Yevseyev | $6^6$ | 4 | | 2 | E Gómez | 6 | 4 | $6^4$ | | | | | | | | |
  | 2 | E Gómez | $7^8$ | 6 | | | | | | | | | | | | | | |
  