Diameter (AUS) Horse
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About
Diameter, a 3yo brown colt from Australia, is trained by Chris Waller at Flemington. He descends from sire Brazen Beau and dam Circular. With a Group Two victory and career earnings of $448,050, he is considered an exceptionally able racehorse. On 27th Sep 2026 at Caulfield, James McDonald rode him to his biggest triumph, capturing the $300000.00 Stutt Stks and beating Somethings Burnin'. He has consistently delivered value to bettors, and backing him throughout his career would have yielded an 8% return on investment.
Race Record
| Event Summary | Runner Stats | Rank |
|---|---|---|
| Caulfield 27-Sep-26 1600m GOOD 4 R6 G2 STUTT STK $181,800 (of $301,800) Barrier 1, Winning Time: 01:37.130, SP: 3.20 In-running: Settled 4th, 1200m 4th, 800m 4th, 400m 4th Sectionals: 600m 00:34.620 1st Diameter ( J Mcdonald 57 ) 2nd Somethings Burnin' ( D Lane 57 ) 0.15L 3rd Scarole ( T Stockdale 57 ) 0.35L See full results | J Mcdonald 57kg | 1 (9) |
| Flemington 12-Sep-26 1400m GOOD 4 R2 LR EXFORD PLATE $3,500 (of $177,100) Barrier 1, Winning Time: 01:22.830, SP: 13.00 In-running: Settled 7th, 800m 7th, 400m 7th Sectionals: 600m 00:34.750 1st Lara Antipova ( M Zahra 57.5 ) 2nd Aragog ( L J Neindorf 57 ) 0.75L 3rd Somethings Burnin' ( B J Melham 57 ) 1.21L 6th Diameter ( J Collett 58 ) 2.09L See full results | J Collett 58kg 2.09L | 6 (14) |
| Rosehill Gardens 29-Aug-26 1300m GOOD 4 R7 G3 UP&COMING $4,000 (of $251,150) Barrier 2, Winning Time: 01:16.080, SP: 26.00 In-running: 800m 5th, 400m 6th Sectionals: 600m 00:33.910 1st Plagiarism ( R Bayliss 55 ) 2nd Genesis Runner ( K Mcevoy 53 ) 0.73L 3rd Hostwin King ( L Beuzelin 53 ) 1.35L 6th Diameter ( T Berry 61 ) 3.53L See full results | T Berry 61kg 3.53L | 6 (10) |
| Rosehill Gardens 21-Aug-26 1030m SOFT 5 R2 OPEN-BT, Winning Time: 01:04.330 Sectionals: 600m 00:35.450 1st Southend ( D Gibbons ) 2nd Chayan ( J B Mcdonald ) 0.17L 3rd Diameter ( N Rawiller ) 2.67L | N Rawiller 2.67L | 3 (6) |
| Warwick Farm 04-Aug-26 792m SOFT 5 R9 OPEN-BT, Winning Time: 00:47.050 Sectionals: 600m 00:33.900 1st Just Glamourous ( M Kirk ) 2nd Castillo King ( T Berry ) 0.16L 3rd Lady Catalina ( A Farragher ) 1.54L 4th Diameter ( J Mcdonald ) 1.75L | J Mcdonald 1.75L | 4 (8) |