Certain Doubt is a 6-year-old Gelding, trained by Jon Walk, based at Eagle Farm. With 49 career starts and 5 wins, it has earned $110,980.
| Date | Track | Dist | Class | Going | Bar | Wgt | Jockey | Result | Margin | Time | SP | Winner / 2nd |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 16 May 2021 | Sunshine Coast | 1600m | BM68 | So5 | 10 | 54kg | Luke Tarrant | 10th of 10 | 13L | 1:39.04 | $91 | 1-Conquer The Stars |
| 7 May 2021 | Gatton | 1400m | BM55 | H8 | 7 | 57.5kg | Travis Wolfgram | 6th of 10 | 3L | 1:25.51 | $4.40 | 1-Run Pam Run |
| 23 Apr 2021 | Gatton | 1400m | RST58 | G4 | 11 | 57kg | Travis Wolfgram | 4th of 12 | 2.6L | 1:23.16 | $26 | 1-Absolute Glory |
| 10 Apr 2021 | Toowoomba | 1300m | RST60 | G4 | 8 | 55.5kg | Micheal Hellyer | 5th of 9 | 5L | 1:20.99 | $21 | 1-Semaphore Girl |
| 6 Feb 2021 | Toowoomba | 1850m | BM58 | G4 | 5 | 57kg | Wendy Peel | 8th of 10 | 6.6L | 1:56.03 | $41 | 1-Political |
| 26 Jan 2021 | Beaudesert | 1650m | BM60 | G4 | 6 | 56.5kg | Wendy Peel | 8th of 11 | 5.1L | 1:42.13 | $61 | 1-Supervisor |
| 27 Dec 2020 | Sunshine Coast | 1800m | BM68 | G4 | 3 | 55.5kg | Taylor Marshall | 8th of 8 | 17L | 1:50.74 | $26 | 1-Thrum |
| 16 Dec 2020 | Eagle Farm | 1400m | Cls 5 | So5 | 10 | 54kg | Andrew Spinks | 11th of 11 | 11L | 1:23.66 | $101 | 1-Sea Raider |
| 6 Dec 2020 | Sunshine Coast | 1400m | BM62 | G4 | 9 | 58.5kg | Andrew Spinks | 8th of 11 | 2.6L | 1:24.60 | $101 | 1-Don't Despair |
| 1 Dec 2020 | Doomben | 1000m | Btria | G4 | 5 | — | Adam Spinks | 6th of 6 | 8.3L | 0:58.06 | 1-Say Haya | |
| 12 Sept 2020 | Nanango | 1600m | Open | Fi2 | 1 | 56.5kg | Cyril Small | 4th of 7 | 7.8L | 1:36.23 | $3.60 | 1-Craiglea Simmo |
| 30 Aug 2020 | Sunshine Coast | 1600m | BM65 | G4 | 4 | 59kg | Minonette Kennedy | 6th of 6 | 13L | 1:37.82 | $11 | 1-Rothabye |
| 29 Apr 2020 | Sunshine Coast | 1800m | BM65 | So5 | 9 | 61kg | Minonette Kennedy | 9th of 10 | 22L | 1:50.19 | $9.50 | 1-Warset |
| 17 Apr 2020 | Sunshine Coast | 1600m | BM58 | So5 | 4 | 62.5kg | Minonette Kennedy | 1st of 10 | 3.5L | 1:38.93 | $14 | 2-Dawson Delight |
| 1 Apr 2020 | Sunshine Coast | 1800m | BM70 | So6 | 7 | 57kg | Dale Smith | 10th of 11 | 7.8L | 1:53.43 | $41 | 1-Al Jood |
| 20 Mar 2020 | Sunshine Coast | 1600m | Cls 5 | So5 | 6 | 55.5kg | Dale Smith | 6th of 9 | 8L | 1:38.58 | $26 | 1-Lucky Jackson |
| 7 Dec 2019 | Toowoomba | 1625m | Cls 3 | G4 | 3 | 58kg | Ron Goltz | 6th of 7 | 4.3L | 1:39.82 | $7 | 1-McMahon |
| 24 Nov 2019 | Sunshine Coast | 1600m | Cls 4 | G4 | 8 | 57kg | Sean Cormack | 5th of 10 | 3.8L | 1:37.19 | $15 | 1-Cabin Fever |
| 13 Nov 2019 | Doomben | 1350m | Cls 3 | G4 | 3 | 56kg | Robbie Fradd | 6th of 8 | 2.3L | 1:20.79 | $31 | 1-Star Silk |
| 21 Sept 2019 | Eagle Farm | 1600m | Cls 3 | G4 | 1 | 59kg | Matthew Cahill | 8th of 8 | 8.6L | 1:36.53 | $31 | 1-Tatcee |
| 8 Sept 2019 | Sunshine Coast | 1800m | Cls 5 | G4 | 5 | 54.5kg | Matthew Cahill | 2nd of 6 | 2L | 1:51.61 | $4.20 | 1-Picka Plum |
| 28 Aug 2019 | Sunshine Coast | 1800m | Cls 2 | G4 | 1 | 56.5kg | Matthew Cahill | 1st of 10 | 1L | 1:53.09 | $3.80 | 2-Crown Dancer |
| 18 Aug 2019 | Sunshine Coast | 1600m | Cls 1 | G4 | 14 | 56.5kg | Matthew Cahill | 1st of 16 | 0.1L | 1:38.48 | $10 | 2-Heavenly Journey |
| 4 Aug 2019 | Sunshine Coast | 1400m | Cls 1 | G4 | 7 | 57kg | Matthew Cahill | 3rd of 14 | 0.3L | 1:24.75 | $16 | 1-Ocean Ruler |
| 18 May 2019 | Toowoomba | 1850m | Cls 2 | G4 | 7 | 59kg | Joshua Oliver | 3rd of 8 | 0.3L | 1:56.88 | $3.70 | 1-Delaney's Desire |
| 3 May 2019 | Sunshine Coast | 1800m | BM62 | So7 | 3 | 56.5kg | Matthew Cahill | 2nd of 6 | 1L | 1:55.84 | $2.90F | 1-Iron Duke |
| 24 Apr 2019 | Ipswich | 1620m | Cls 2 | H9 | 8 | 54kg | Luke Tarrant | 6th of 8 | 4.1L | 1:42.90 | $16 | 1-Reposition |
| 14 Apr 2019 | Sunshine Coast | 1800m | Cls 2 | So5 | 7 | 55kg | Luke Tarrant | 3rd of 8 | 1.2L | 1:53.08 | $6.50 | 1-Galaxy Guru |
| 3 Apr 2019 | Doomben | 1650m | BM65 | H8 | 2 | 56kg | Luke Tarrant | 5th of 7 | 4.9L | 1:45.15 | $11 | 1-Belle Roc |
| 20 Mar 2019 | Doomben | 1350m | RST65 | So6 | 1 | 56kg | Ryan Maloney | 3rd of 7 | 2.3L | 1:20.49 | $17 | 1-Six Sigma |
| 3 Mar 2019 | Sunshine Coast | 1400m | Cls 1 | So5 | 2 | 57.5kg | Ryan Maloney | 5th of 7 | 4.1L | 1:26.71 | $6 | 1-The Last Sequalo |
| 2 Dec 2018 | Sunshine Coast | 1800m | Mdn | G4 | 7 | 57.5kg | Ryan Maloney | 1st of 7 | 1.3L | 1:51.63 | $5.50 | 2-Savvy Acquisition |
| 21 Nov 2018 | Ipswich | 1666m | Cls 1 | G3 | 8 | 56.5kg | Dale Smith | 10th of 10 | 5.7L | 1:43.75 | $21 | 1-Kemsrey |
| 6 Nov 2018 | Sunshine Coast | 1400m | Mdn | G4 | 1 | 56.5kg | D J Browne | 2nd of 9 | 0.5L | 1:24.93 | $2.15F | 1-Mingalah |
| 26 Oct 2018 | Sunshine Coast | 1300m | Mdn | G4 | 9 | 56.5kg | Dale Smith | 2nd of 9 | 0.1L | 1:19.29 | $12 | 1-In Moderation |
| 13 Aug 2018 | Quirindi | 1600m | Mdn | G3 | 4 | 59kg | Jake Hull | 5th of 10 | 4.4L | 1:40.29 | $8.50 | 1-Laranta |
| 29 June 2018 | Tamworth | 1400m | Mdn | So5 | 3 | 59kg | Robert Thompson | 7th of 12 | 7.4L | 1:24.96 | $5 | 1-Ratler |
| 27 May 2018 | Gunnedah | 1250m | Mdn | G3 | 11 | 58.5kg | Robert Thompson | 6th of 11 | 3.8L | 1:14.31 | $3.60F | 1-Jeff's Folly |
| 2 May 2018 | Tamworth | 900m | Btria | G4 | 2 | — | Luke Cumberland | 2nd of 6 | 1L | 0:54.20 | 1-Yzerman | |
| 4 Dec 2017 | Tamworth | 1200m | Mdn | So7 | 9 | 57.5kg | Robert Thompson | 6th of 10 | 7.8L | 1:10.92 | $2.80F | 1-Four More Millers |
| 20 Nov 2017 | Muswellbrook | 1000m | Mdn | G4 | 3 | 57.5kg | Robert Thompson | 4th of 12 | 4.4L | 0:57.67 | $2.50F | 1-Forever Ranga |
| Condition | Starts | Record | Win % | Place % |
|---|---|---|---|---|
| This distance | 12 | 0-1-2 | 0% | 25% |
| Firm | 1 | 0-0-0 | 0% | 0% |
| Good | 29 | 3-3-3 | 10% | 31% |
| Soft | 16 | 2-1-2 | 13% | 31% |
| Heavy | 3 | 0-0-0 | 0% | 0% |
| First-up | 4 | 0-0-0 | 0% | 0% |
| Second-up | 4 | 0-0-1 | 0% | 25% |
1(1900), 2(1800), 2(1600)
| Track | Runs | Wins | Places | Win % | Place % |
|---|---|---|---|---|---|
| Sunshine Coast | 8 | 0 | 0 | 0% | 0% |
| Gatton | 2 | 0 | 0 | 0% | 0% |
| Bundaberg | 1 | 0 | 0 | 0% | 0% |
| Toowoomba | 2 | 0 | 0 | 0% | 0% |
| Ipswich | 3 | 0 | 0 | 0% | 0% |
| Beaudesert | 1 | 0 | 0 | 0% | 0% |
| Eagle Farm | 2 | 0 | 0 | 0% | 0% |
| Warwick | 1 | 0 | 0 | 0% | 0% |
| Doomben | 1 | 0 | 0 | 0% | 0% |
| Jockey | Runs | Wins | Places | Win % | Place % |
|---|---|---|---|---|---|
| Michael Cahill | 1 | 0 | 0 | 0% | 0% |
| Travis Wolfgram | 2 | 0 | 0 | 0% | 0% |
| Luke Tarrant | 1 | 0 | 0 | 0% | 0% |
| Kelly Gates | 1 | 0 | 0 | 0% | 0% |
| Micheal Hellyer | 1 | 0 | 0 | 0% | 0% |
| Unknown | 4 | 0 | 0 | 0% | 0% |
| Wendy Peel | 2 | 0 | 0 | 0% | 0% |
| Jason Taylor | 1 | 0 | 0 | 0% | 0% |
| Andrew Spinks | 2 | 0 | 0 | 0% | 0% |
| Taylor Marshall | 1 | 0 | 0 | 0% | 0% |
| Casey Waddell | 4 | 0 | 0 | 0% | 0% |
| Minonette Kennedy | 1 | 0 | 0 | 0% | 0% |