title: 2021 Moneta Czech Open – Singles
text: # 2021 Moneta Czech Open – Singles
  
  Kamil Majchrzak was the defending champion but chose not to defend his title.
  
  Federico Coria won the title after defeating Alex Molčan $7–6^{(7–1)},$ 6–3 in the final.
  
  ## Seeds
  
  * Pablo Andújar (first round)
  * Jiří Veselý (second round)
  * Gianluca Mager (semifinals)
  * Federico Coria (champion)
  * Hugo Dellien (quarterfinals)
  * Jozef Kovalík (first round)
  * Juan Manuel Cerúndolo (first round, retired)
  * Blaž Rola (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
  
  ### Finals
  
  | Semifinals | Semifinals | Semifinals | Semifinals | Final | Final | Final | Final |
  | - | - | - | - | - | - | - | - |
  | | Alex Molčan | 6 | 6 | | | | |
  | 3 | Gianluca Mager | 1 | 3 | | | | |
  | 3 | Gianluca Mager | 1 | 3 | | Alex Molčan | $6^1$ | 3 |
  | | | | | 4 | Federico Coria | $7^7$ | 6 |
  | 4 | Federico Coria | 6 | 6 | 4 | Federico Coria | $7^7$ | 6 |
  | | Zdeněk Kolář | 4 | 2 | | | | |
  
  ### 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 | P Andújar | 6 | 1 | 4 | | | | | | | | | | | | |
  | | Yo Watanuki | 1 | 6 | 6 | | Yo Watanuki | 1 | 2 | | | | | | | | |
  | | A Molčan | 6 | 6 | | | A Molčan | 6 | 6 | | | | | | | | |
  | Q | David Poljak | 3 | 3 | | | | | | | A Molčan | 6 | 6 | | | | |
  | | G Oliveira | 3 | 6 | 4 | | | | | 5 | H Dellien | 3 | 1 | | | | |
  | | M Vrbenský | 6 | 2 | 6 | | M Vrbenský | 1 | 2 | | | | | | | | |
  | WC | A Paulson | 1 | 3 | | 5 | H Dellien | 6 | 6 | | | | | | | | |
  | 5 | H Dellien | 6 | 6 | | | | | | | | | | | A Molčan | 6 | 6 |
  | 3 | G Mager | 6 | 6 | | | | | | | | | | 3 | G Mager | 1 | 3 |
  | Alt | J Forejtek | 3 | 3 | | 3 | G Mager | $7^{10}$ | 6 | | | | | | | | |
  | WC | Daniel Siniakov | 1 | 0 | | | S Báez | $6^8$ | 2 | | | | | | | | |
  | | S Báez | 6 | 6 | | | | | | 3 | G Mager | 6 | 6 | | | | |
  | | M Bachinger | 6 | 0 | 1 | | | | | WC | D Svrčina | 3 | 2 | | | | |
  | WC | D Svrčina | 2 | 6 | 6 | WC | D Svrčina | 6 | 7 | | | | | | | | |
  | Q | A Erler | $7^7$ | 4 | | Q | A Erler | 1 | 5 | | | | | | | | |
  | 7 | JM Cerúndolo | $6^1$ | $2^r$ | | | | | | | | | | | | | |
  
  ### 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 |
  | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
  | 8 | B Rola | 6 | 7 | | | | | | | | | | | | | | |
  | Q | A Rybakov | 1 | 5 | | 8 | B Rola | 6 | 3 | $7^8$ | | | | | | | | |
  | | J Lehečka | 5 | 5 | | | L Klein | 4 | 6 | $6^6$ | | | | | | | | |
  | | L Klein | 7 | 7 | | | | | | | 8 | B Rola | 4 | 1 | | | | |
  | PR | A Kuznetsov | 6 | $7^7$ | | | | | | | 4 | F Coria | 6 | 6 | | | | |
  | LL | J Sels | 0 | $6^4$ | | PR | A Kuznetsov | $7^7$ | 5 | 2 | | | | | | | | |
  | LL | J Härteis | 1 | 0 | | 4 | F Coria | $6^0$ | 7 | 6 | | | | | | | | |
  | 4 | F Coria | 6 | 6 | | | | | | | | | | | 4 | F Coria | 6 | 6 |
  | 6 | J Kovalík | 6 | $6^4$ | 4 | | | | | | | | | | | Z Kolář | 4 | 2 |
  | | V Kopřiva | 2 | $7^7$ | 6 | | V Kopřiva | 3 | $6^3$ | | | | | | | | | |
  | | L Miedler | 2 | 2 | | | Z Kolář | 6 | $7^7$ | | | | | | | | | |
  | | Z Kolář | 6 | 6 | | | | | | | | Z Kolář | 6 | 6 | | | | |
  | Q | S Mansouri | 0 | 6 | 2 | | | | | | | T Kamke | 2 | 3 | | | | |
  | | T Kamke | 6 | 3 | 6 | | T Kamke | 6 | 6 | | | | | | | | | |
  | | F Mena | 2 | $6^5$ | | 2 | J Veselý | 3 | 4 | | | | | | | | | |
  | 2 | J Veselý | 6 | $7^7$ | | | | | | | | | | | | | | |
  