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Optima RacingHorses › Master Zack (GB)

Master Zack (GB)

4yo b c · Form & record 2024-08-03 to 2026-04-02 — from our verified UK & Irish results database. Trained by Martin Dunne.
Pedigree Ardad (IRE) × Amna (GB) (by Sayif)
OwnerT C Obrien
BreederGrove Farm Stud
Ratings Official 46 · best RPR 54 · best TS 54
19
Runs
1
Wins
5.3%
Strike rate
21.1%
Place rate
0.54
Actual / Expected
-47.4%
Level-stake ROI

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Full form — last 19 runs

Btn = beaten lengths · OR = official rating · RPR = Racing Post Rating · TS = Topspeed. Blank cells are values we don't hold for that run — never a zero.
DateOffCourseDistGoingCl PosBtnJockeyWgt ORRPRTSSP
2026-04-02 26d Southwell (AW) 5f Standard 6 13/13 4 Hollie Doyle ht 121 46 12 29 28/1
Flat AW Midnite A Next Generation Betting App Handicap Swerved left start - always behind(op 33/1)
2026-03-07 137d Chelmsford (AW) 5f Standard 6 7/8 5 Jack Mitchell 126 46 17 7 14/1
Flat AW For The Love Of Horses Handicap Led narrowly or disputed lead - lost position over 2f out - weakened under 2f out(tchd 12/1)
2025-10-21 18d Yarmouth 6f Soft 6 14/16 13 Jack Dace ht 115 46 50 66/1
Flat Turf tigerbet.co.uk Bet Online Handicap Taken down early - blindfold off late - reared start and lost many lengths start - tailed off throughout (jockey said colt jumped awkwardly from stalls and was slowly into stride)(tchd 50/1)
2025-10-03 58d Southwell (AW) 5f Standard 6 9/10 4.75 Kieran O'Neill ht 131 46 20 10 14/1
Flat AW At The Races App Expert Tips Handicap Always behind(op 12/1)
2025-08-06 4d Yarmouth 5f Firm 6 3/7 1.25 David Egan ht 132 50 45 26 4/1
Flat Turf BetWright Grilling Me Softly Classified Stakes Awkward start - in rear - steady headway on far side of group from over 2f out - went third inside final furlong - no extra final 110yds(op 5/1)
2025-08-02 37d Lingfield 5f Good 6 6/6 0.75 Kyle McHugh ht 122 50 37 22 12/1
Flat Turf Sky Sports Racing Virgin 519 Handicap Always behind(tchd 11/1)
2025-06-26 11d Nottingham 5f Firm 6 4/6 1.75 Aiden Brookes ht 128 52 46 31 15/2
Flat Turf pricedup.bet Boosts Handicap Took keen hold - prominent - weakened inside final furlong(op 7/1 tchd 13/2)
2025-06-15 15d Doncaster 5f Firm 6 3/8 1.25 Adam Farragher ht 129 52 53 31 50/1
Flat Turf Get The Inside Track With raceday-ready.com Handicap Taken down early - awkward start - in rear - headway over 1f out - went third inside final 110yds(op 33/1 tchd 50/1)
2025-05-31 26d Southwell (AW) 5f Standard 6 8/9 5.5 Rob Hornby ht 122 52 17 54 5/1
Flat AW Golf And Gallop Handicap Taken down early - upset in stalls - slowly away - always behind (jockey said colt was restless in stalls and was slowly away as a result)(tchd 9/2)
2025-05-05 31d Bath 5.5f Firm 6 3/7 2.5 Richard Kingscote ht 135 52 47 16 11/4
Flat Monarch Classic Car Show August 24th Handicap
2025-04-04 106d Southwell (AW) 5f Standard 6 1/8 David Egan ht 121 45 54 9 9/1
Flat Boost Your Acca At BetMGM Handicap
2024-12-19 26d Chelmsford (AW) 5f Standard 6 7/8 0.5 Jack Doughty 117 45 35 23 20/1
Flat AW Sky Bet For The Fans Nursery Handicap Reared start - always behind(op 25/1)
2024-11-23 14d Wolverhampton (AW) 5f Standard 6 7/7 1.75 Adam Farragher 120 45 34 28 12/1
Flat AW Safer Gambling Tools At BetMGM Nursery Handicap Taken down early - prominent - weakened from 1f out(op 9/1 tchd 16/1)
2024-11-09 9d Chelmsford (AW) 5f Standard 6 4/7 0.3 Raul Da Silva 120 45 44 36 15/2
Flat AW CCR Supports The Royal British Legion Nursery Handicap Led at fast pace - hung right and ridden over 1f out - headed inside final furlong - kept on inside final 110yds - lost third towards finish(op 9/2)
2024-10-31 10d Chelmsford (AW) 6f Standard 6 8/13 2 Raul Da Silva h 125 45 31 28 25/1
Flat AW Betfair Exchange Nursery Handicap Awkward start - took keen hold - in rear - some headway when not clear run over 1f out - soon waiting for room - no chance with winner when kept on inside final furlong (jockey said colt was denied a clear run approximately 1f out)(op 22/1)
2024-10-21 11d Bath 5f Soft 6 4/5 2.25 Raul Da Silva h 115 45 32 2 11/2
Flat Turf Best Odds Guaranteed dragonbet.co.uk Nursery Handicap Pressed leader - lost position 2f out - weakened gradually from over 1f out(op 13/2 tchd 7/1)
2024-10-10 47d Chelmsford (AW) 5f Standard 6 4/7 1.75 Dylan Hogan 120 45 39 13 16/5
Flat AW Betfair Safer Gambling Tools Nursery Handicap Ducked right start - took keen hold - midfield - headway on outer home turn - outpaced from over 1f out - went fourth final strides (jockey said colt ran too free)(op 7/1 tchd 8/1)
2024-08-24 21d Newmarket (July) 6f Soft 4 8/10 0.5 Dylan Hogan 130 18 10 200/1
Flat Turf Jenningsbet British EBF Novice Stakes (GBB Race) Steadied start - took keen hold - in rear throughout (jockey said colt ran too free early)(op 150/1)
2024-08-03 DEB Windsor 5f Firm 5 9/10 0.5 Jack Gilligan 133 40 29 18/1
Flat Turf British EBF Maiden Stakes (GBB Race) Taken down early - dwelt start - always behind(op 12/1)

Record by layoff

Days since the previous run. Does this one go well fresh, or need a run? Career debut excluded — no prior run means no layoff.
Time since last runRunsWinsSR
Quick (under 2wk)600.0%
Normal (2-4wk)600.0%
Freshened (1-2m)400.0%
Layoff (2-6m)2150.0%

Record by class

ClassRunsWinsSR
Class 61715.9%

Record by distance

TripRunsWinsSR
Sprint (5-6f)1915.3%

Record by going

GoingRunsWinsSR
Standard10110.0%
Firm500.0%
Soft300.0%

Record by course

CourseRunsWinsSR
Chelmsford (AW)500.0%
Southwell (AW)4125.0%

We score Master Zack (GB) against the whole field — every time it runs

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Data: official UK & Irish results, 2024-08-03–2026-04-02. Historical and not a guarantee of future results. 18+ · BeGambleAware.