title: 2021 Slovak Open II – Singles
text: # 2021 Slovak Open II – Singles
  
  Maximilian Marterer was the defending champion but lost in the quarterfinals to Stefano Travaglia.
  
  Tallon Griekspoor won the title after defeating Zsombor Piros 6–3, 6–2 in the final.
  
  ## Seeds
  
  * Stefano Travaglia (semifinals, retired)
  * Tallon Griekspoor (champion)
  * Carlos Taberner (first round)
  * Norbert Gombos (first round)
  * Alex Molčan (semifinals)
  * Gilles Simon (withdrew)
  * Liam Broady (second round)
  * Tomáš Macháč (first round)
  
  ## 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 | Semifinals | Final | Final | Final | Final |
  | - | - | - | - | - | - | - | - | - |
  | 1 | Stefano Travaglia | $6^5$ | $2^r$ | | | | | |
  | Q | Zsombor Piros | $7^7$ | 3 | | | | | |
  | Q | Zsombor Piros | $7^7$ | 3 | | Q | Zsombor Piros | 3 | 2 |
  | | | | | | 2 | Tallon Griekspoor | 6 | 6 |
  | 5 | Alex Molčan | $7^7$ | 3 | 4 | 2 | Tallon Griekspoor | 6 | 6 |
  | 2 | Tallon Griekspoor | $6^5$ | 6 | 6 | | | | |
  
  ### Top half
  
  | First round | First round | First round | First round | First round | Second round | Second round | Second round | Second round | Quarterfinals | Quarterfinals | Quarterfinals | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
  | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
  | 1 | S Travaglia | $7^7$ | 6 | | | | | | | | | | | | | |
  | | Z Kolář | $6^4$ | 3 | | 1 | S Travaglia | 6 | 6 | | | | | | | | |
  | | C İlkel | 6 | $6^1$ | 6 | | C İlkel | 4 | 2 | | | | | | | | |
  | LL | A Shevchenko | 4 | $7^7$ | 3 | | | | | 1 | S Travaglia | $7^7$ | 6 | | | | |
  | | M Marterer | 4 | 6 | 6 | | | | | | M Marterer | $6^1$ | 1 | | | | |
  | | J Rodionov | 6 | 1 | 4 | | M Marterer | 6 | $7^8$ | | | | | | | | |
  | | I Marchenko | 2 | 1 | | 7 | L Broady | 4 | $6^6$ | | | | | | | | |
  | 7 | L Broady | 6 | 6 | | | | | | | | | | 1 | S Travaglia | $6^5$ | $2^r$ |
  | 3 | C Taberner | 2 | $6^5$ | | | | | | | | | | Q | Z Piros | $7^7$ | 3 |
  | | F Ferreira Silva | 6 | $7^7$ | | | F Ferreira Silva | 6 | 7 | | | | | | | | |
  | Q | D Svrčina | 2 | $7^7$ | 6 | Q | D Svrčina | 4 | 5 | | | | | | | | |
  | | F Horanský | 6 | $6^5$ | 1 | | | | | | F Ferreira Silva | 0 | 4 | | | | |
  | Q | Miloš Karol | 4 | 3 | | | | | | Q | Z Piros | 6 | 6 | | | | |
  | | L Lacko | 6 | 6 | | | L Lacko | 2 | 4 | | | | | | | | |
  | Q | Z Piros | 7 | 3 | 6 | Q | Z Piros | 6 | 6 | | | | | | | | |
  | 8 | T Macháč | 5 | 6 | 4 | | | | | | | | | | | | |
  
  ### 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals | Semifinals |
  | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
  | 5 | A Molčan | 6 | $7^9$ | | | | | | | | | | | | | | | | |
  | | R Ramanathan | 3 | $6^7$ | | 5 | A Molčan | 6 | 6 | | | | | | | | | | | |
  | WC | J Forejtek | 2 | 4 | | Alt | T Kamke | 2 | 2 | | | | | | | | | | | |
  | Alt | T Kamke | 6 | 6 | | | | | | | 5 | A Molčan | 6 | 4 | 6 | | | | | |
  | | J Sousa | $6^6$ | $7^7$ | $6^2$ | | | | | | | D Džumhur | 1 | 6 | 3 | | | | | |
  | | A Çelikbilek | $7^8$ | $6^3$ | $7^7$ | | A Çelikbilek | 4 | 4 | | | | | | | | | | | |
  | | D Džumhur | 6 | 6 | | | D Džumhur | 6 | 6 | | | | | | | | | | | |
  | 4 | N Gombos | 3 | 3 | | | | | | | | | | | | 5 | A Molčan | $7^7$ | 3 | 4 |
  | LL | S Mochizuki | $6^5$ | 3 | | | | | | | | | | | | 2 | T Griekspoor | $6^5$ | 6 | 6 |
  | | K Żuk | $7^7$ | 6 | | | K Żuk | 6 | 3 | 2 | | | | | | | | | | |
  | | S Stakhovsky | 4 | 5 | | | J Lehečka | 2 | 6 | 6 | | | | | | | | | | |
  | | J Lehečka | 6 | 7 | | | | | | | | J Lehečka | $6^3$ | 4 | | | | | | |
  | Q | D Kalenichenko | $7^7$ | $7^7$ | | | | | | | 2 | T Griekspoor | $7^7$ | 6 | | | | | | |
  | WC | Lukáš Palovič | $6^4$ | $6^5$ | | Q | D Kalenichenko | $6^2$ | $6^1$ | | | | | | | | | | | |
  | WC | Lukáš Pokorný | $6^4$ | 1 | | 2 | T Griekspoor | $7^7$ | $7^7$ | | | | | | | | | | | |
  | 2 | T Griekspoor | $7^7$ | 6 | | | | | | | | | | | | | | | | |
  