title: 2018 RBC Pro Challenge – Singles
text: # 2018 RBC Pro Challenge – Singles
  
  Kristie Ahn was the defending champion, but retired in the first round against Kurumi Nara.
  
  Whitney Osuigwe won the title, defeating Beatriz Haddad Maia in the final, 6–3, 6–4.
  
  ## Seeds
  
  * Belinda Bencic (semifinals)
  * Madison Brengle (second round)
  * Fanny Stollár (first round)
  * Jessica Pegula (first round)
  * Claire Liu (second round)
  * Nicole Gibbs (second round)
  * Kristie Ahn (first round, retired)
  * Christina McHale (second 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 | Belinda Bencic | 4 | 6 | $6^3$ | | | | |
  | JE | Whitney Osuigwe | 6 | 2 | $7^7$ | | | | |
  | JE | Whitney Osuigwe | 6 | 2 | $7^7$ | JE | Whitney Osuigwe | 6 | 6 |
  | | | | | | | Beatriz Haddad Maia | 3 | 4 |
  | | Beatriz Haddad Maia | 6 | 6 | | | Beatriz Haddad Maia | 3 | 4 |
  | | Danielle Lao | 2 | 3 | | | | | |
  
  ### 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 | Semifinals |
  | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
  | 1 | B Bencic | 6 | 6 | | | | | | | | | | | | | | | | |
  | | U Eikeri | 1 | 2 | | 1 | B Bencic | 6 | 7 | | | | | | | | | | | |
  | | V Lepchenko | 6 | 4 | 6 | | V Lepchenko | 2 | 5 | | | | | | | | | | | |
  | | V Flink | 3 | 6 | 4 | | | | | | 1 | B Bencic | 4 | 6 | 6 | | | | | |
  | Q | A Li | 2 | 5 | | | | | | | | K Day | 6 | 2 | 2 | | | | | |
  | | K Day | 6 | 7 | | | K Day | 6 | $7^7$ | | | | | | | | | | | |
  | PR | E Halbauer | 6 | 5 | 3 | 8/WC | C McHale | 4 | $6^3$ | | | | | | | | | | | |
  | 8/WC | C McHale | 3 | 7 | 6 | | | | | | | | | | | 1 | B Bencic | 4 | 6 | $6^3$ |
  | 3 | F Stollár | 4 | 6 | 3 | | | | | | | | | | | JE | W Osuigwe | 6 | 2 | $7^7$ |
  | PR | N Podoroska | 6 | 4 | 6 | PR | N Podoroska | 2 | 1 | | | | | | | | | | | |
  | | V Cepede Royg | 0 | 2 | | WC | C McNally | 6 | 6 | | | | | | | | | | | |
  | WC | C McNally | 6 | 6 | | | | | | | WC | C McNally | 7 | $6^3$ | 3 | | | | | |
  | JE | W Osuigwe | 6 | 5 | 6 | | | | | | JE | W Osuigwe | 5 | $7^7$ | 6 | | | | | |
  | WC | S Chang | 2 | 7 | 3 | JE | W Osuigwe | $6^4$ | 6 | 6 | | | | | | | | | | |
  | | K Nara | 6 | 0 | | | K Nara | $7^7$ | 3 | 2 | | | | | | | | | | |
  | 7 | K Ahn | 2 | $0^r$ | | | | | | | | | | | | | | | | |
  
  ### 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 |
  | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
  | 5 | C Liu | 6 | 3 | 6 | | | | | | | | | | | | |
  | Q | B Turati | 2 | 6 | 3 | 5 | C Liu | 4 | 3 | | | | | | | | |
  | | S Karatantcheva | 6 | 6 | | | S Karatantcheva | 6 | 6 | | | | | | | | |
  | | A Kiick | 1 | 2 | | | | | | | S Karatantcheva | 1 | 6 | 5 | | | |
  | | G Brodsky | 6 | 5 | 3 | | | | | | B Haddad Maia | 6 | 3 | 7 | | | |
  | | B Haddad Maia | 1 | 7 | 6 | | B Haddad Maia | $7^7$ | 6 | | | | | | | | |
  | WC | L Chirico | $7^7$ | 6 | | WC | L Chirico | $6^3$ | 4 | | | | | | | | |
  | 4 | J Pegula | $6^4$ | 0 | | | | | | | | | | | B Haddad Maia | 6 | 6 |
  | 6 | N Gibbs | 6 | 4 | 6 | | | | | | | | | | D Lao | 2 | 3 |
  | | A Muhammad | 3 | 6 | 3 | 6 | N Gibbs | 2 | 3 | | | | | | | | |
  | | D Lao | 6 | $7^7$ | | | D Lao | 6 | 6 | | | | | | | | |
  | | G Min | 1 | $6^3$ | | | | | | | D Lao | 6 | 7 | | | | |
  | Q | E Douglas | 5 | 6 | 4 | | | | | | L Davis | 1 | 5 | | | | |
  | | L Davis | 7 | 4 | 6 | | L Davis | 3 | 6 | 6 | | | | | | | |
  | Q | Q Gleason | 6 | 1 | 0 | 2 | M Brengle | 6 | 4 | 4 | | | | | | | |
  | 2 | M Brengle | 4 | 6 | 6 | | | | | | | | | | | | |
  