His best spell came in the autumn of 2023, when he won back-to-back Class 2 races at Beverley and then Windsor within the space of a month. Jockey Clifford Lee's comments after Windsor paint a vivid picture of a horse who had finally grown up — relaxed at the start, picking off rivals one by one, finishing so well that he ran Emaraaty Ana, a horse rated 111, to a short margin at Ascot shortly before. Lee described him as having "grown up now" and spoken of a confidence booster well earned. His first win had come at Haydock Park in September 2021, and it is Lee who has been most associated with him throughout — together they have won 4 from 21 races, a win rate of 19%, or almost 1 in every 5. That is a noticeably better return than Korker achieves with anyone else.
He has not won in 31 months, and his last six runs show him drifting out of contention — finishing tenth, eighth, thirteenth, thirteenth before a second and a third gave a brief flicker of renewed form. Trainer Karl Burke, whose yard at Coverham has sent out 140 winners this season alone, has acknowledged that Korker came back a little tight from his latest run at Hamilton but is targeting the Wokingham — a big, competitive sprint at Royal Ascot. Burke is sticking with jockey Jack Nicholls, who he says gets a good tune out of a horse that can be slowly away. Whether Korker has one more big day in him is genuinely open. The form says not yet. The trainer clearly thinks otherwise.
| Course | Races | Results | Last visited | Win rate |
|---|---|---|---|---|
| York Galloping |
14 | 1 win, 3 seconds, 4 thirds, 6 other | 11 Oct | 7.1% |
| Ascot Galloping |
6 | 1 second, 5 other | 3 Oct | 0% |
| Haydock Park Galloping |
5 | 1 win, 1 second, 1 third, 2 other | 25 Apr | 20% |
| Doncaster Galloping |
4 | 1 second, 3 other | 29 Mar | 0% |
| Beverley Undulating |
2 | 1 win, 1 other | 26 Sep | 50% |
| Newcastle Galloping |
2 | 1 second, 1 other | 11 May | 0% |
| Sandown Park Galloping |
2 | 1 second, 1 other | 7 Jul | 0% |
| Windsor Sharp |
1 | 1 win | 23 Oct | 100% |
| Ripon Sharp |
1 | 1 other | 27 Sep | 0% |
| Newbury Galloping |
1 | 1 other | 16 May | 0% |
| Southwell Galloping |
1 | 1 other | 6 Apr | 0% |
| Ayr Galloping |
1 | 1 third | 21 Sep | 0% |
| Goodwood Undulating |
1 | 1 other | 2 Aug | 0% |
| The Curragh Galloping |
1 | 1 other | 30 Jun | 0% |
| Newmarket Galloping |
1 | 1 other | 6 May | 0% |
| Hamilton Park Sharp |
1 | 1 third | 5 Jun | 0% |