title: 2018 Stockton Challenger – Men's singles
text: # 2018 Stockton Challenger – Men's singles
  
  Cameron Norrie was the defending champion but chose not to defend his title.
  
  Lloyd Harris won the title after defeating Marc Polmans 6–2, 6–2 in the final.
  
  ## Seeds
  
  * Jordan Thompson (semifinals)
  * Reilly Opelka (first round)
  * Henri Laaksonen (first round)
  * Lloyd Harris (champion)
  * Casper Ruud (second round)
  * Noah Rubin (quarterfinals)
  * Alex Bolt (second round)
  * Marc Polmans (final)
  
  ## 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 |
  | - | - | - | - | - | - | - | - |
  | 1 | Jordan Thompson | $6^6$ | 2 | | | | |
  | 4 | Lloyd Harris | $7^8$ | 6 | | | | |
  | 4 | Lloyd Harris | $7^8$ | 6 | 4 | Lloyd Harris | 6 | 6 |
  | | | | | 8 | Marc Polmans | 2 | 2 |
  | 8 | Marc Polmans | 6 | 6 | 8 | Marc Polmans | 2 | 2 |
  | | Maxime Janvier | 1 | 4 | | | | |
  
  ### Top 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 |
  | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
  | 1 | J Thompson | 6 | 6 | | | | | | | | | | | | | | | |
  | Q | P Kypson | 2 | 2 | | 1 | J Thompson | 4 | 6 | 6 | | | | | | | | | |
  | Alt | K Uchida | 6 | $6^3$ | 6 | Alt | K Uchida | 6 | 3 | 1 | | | | | | | | | |
  | Q | T Paul | 1 | $7^7$ | 0 | | | | | | 1 | J Thompson | $6^4$ | $7^7$ | 6 | | | | |
  | Q | W Blumberg | 3 | 6 | 6 | | | | | | 6 | N Rubin | $7^7$ | $6^2$ | 3 | | | | |
  | | JC Aragone | 6 | 2 | 2 | Q | W Blumberg | 1 | 6 | 4 | | | | | | | | | |
  | WC | J Brooksby | 2 | 4 | | 6 | N Rubin | 6 | 4 | 6 | | | | | | | | | |
  | 6 | N Rubin | 6 | 6 | | | | | | | | | | | | 1 | J Thompson | $6^6$ | 2 |
  | 4 | L Harris | 6 | 6 | | | | | | | | | | | | 4 | L Harris | $7^8$ | 6 |
  | | D Köpfer | 3 | 4 | | 4 | L Harris | 6 | 6 | | | | | | | | | | |
  | WC | T-S Kwiatkowski | 3 | $7^7$ | 6 | WC | T-S Kwiatkowski | 2 | 4 | | | | | | | | | | |
  | | L Miedler | 6 | $6^5$ | 4 | | | | | | 4 | L Harris | $6^6$ | 6 | 6 | | | | |
  | | C Eubanks | 6 | $7^7$ | | | | | | | | C Eubanks | $7^8$ | 4 | 3 | | | | |
  | | C İlkel | 4 | $6^4$ | | | C Eubanks | 6 | $7^{10}$ | | | | | | | | | | |
  | | J Choinski | 3 | 0 | | 5 | C Ruud | 1 | $6^8$ | | | | | | | | | | |
  | 5 | C Ruud | 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 | Quarterfinals | Semifinals | Semifinals | Semifinals | Semifinals |
  | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
  | 8 | M Polmans | 6 | 6 | | | | | | | | | | | | | | | |
  | | J Clarke | 3 | 0 | | 8 | M Polmans | $6^4$ | 6 | 6 | | | | | | | | | |
  | | M Krueger | 3 | 6 | 6 | | M Krueger | $7^7$ | 4 | 3 | | | | | | | | | |
  | | J-P Smith | 6 | 3 | 4 | | | | | | 8 | M Polmans | 4 | 6 | 6 | | | | |
  | | D Evans | 6 | 6 | | | | | | | | L Broady | 6 | 4 | 2 | | | | |
  | SE | J Duckworth | 2 | 2 | | | D Evans | 0 | $7^7$ | 4 | | | | | | | | | |
  | | L Broady | 3 | 6 | 6 | | L Broady | 6 | $6^3$ | 6 | | | | | | | | | |
  | 3 | H Laaksonen | 6 | 4 | 4 | | | | | | | | | | | 8 | M Polmans | 6 | 6 |
  | 7 | A Bolt | 6 | 6 | | | | | | | | | | | | | M Janvier | 1 | 4 |
  | WC | T Fawcett | 4 | 1 | | 7 | A Bolt | 4 | 3 | | | | | | | | | | |
  | | D King | 6 | 6 | | | D King | 6 | 6 | | | | | | | | | | |
  | WC | Philip Hjorth | 1 | 1 | | | | | | | | D King | 5 | 7 | $6^3$ | | | | |
  | Q | A Sarkissian | 6 | $6^4$ | 6 | | | | | | | M Janvier | 7 | 5 | $7^7$ | | | | |
  | | M Banes | 4 | $7^7$ | 1 | Q | A Sarkissian | $6^1$ | 0 | | | | | | | | | | |
  | | M Janvier | $6^4$ | 6 | 6 | | M Janvier | $7^7$ | 6 | | | | | | | | | | |
  | 2 | R Opelka | $7^7$ | 4 | 4 | | | | | | | | | | | | | | |
  