| Mark Schwarm | Horseshoe Indianapolis
31-May-24,
Artie's Lady |
| Mark Shanley | Charles Town
12-Jul-25,
Saturn's Ghost |
| Mark Shuman | Laurel Park
14-Feb-26,
Old Bay |
| Mark Simms | Turfway Park
16-Jan-26,
Tapajo Belle |
| Mark Simms, Jr. | Turfway Park
14-Feb-26,
Memes |
| Mark Sims | Ipswich
20-May-11,
AFRICAN LION |
| Mark Spackman | Cessnock
01-Aug-17,
Rocco in the House |
| Mark Stapleford | Gilgandra
31-Dec-17,
Federal Story |
| Mark Stephenson | Burrumbeet
01-Jan-26,
Stirrup |
| Mark Stewart | Port Macquarie
10-Nov-22,
Preferred Choice |
| Mark Sues | Eagle Farm
01-Jun-24,
Commodus |
| Mark Tasso | Presque Isle Downs
24-Oct-23,
Keen On Me |
| Mark Thomas | Geelong
08-Aug-25,
Mr Rude |
| Mark Todd | Sha Tin
28-Apr-19,
Eminent |
| Mark Tomczak | Tampa Bay Downs
31-Jan-26,
Black Candy |
| Mark V. Salvaggio | Laurel Park
01-Mar-26,
Blo By The Field |
| Mark W Lewis | Mount Isa
10-Jul-23,
Lucky Machu |
| Mark W Walker | Cranbourne
31-Oct-25,
Esternay |
| Mark W. Anderson | Will Rogers Downs
25-Feb-26,
Manny's Kat |
| Mark W. Buehrer | Will Rogers Downs
03-Mar-26,
Myth Conception |
| Mark Walker | Flemington
28-Feb-26,
Harry Met Sally |
| Mark Walker & Sam Bergerson | |
| Mark Walker & Sam Bergerson | Trentham
01-Mar-26,
My Lips Are Sealed |
| Mark Wallace | Kembla Grange
28-Dec-11,
Very Trying |
| Mark Ward | Gundagai
08-Sep-19,
Zartini |
| Mark Westthorp | Mount Barker
08-Feb-26,
Maybe Divine |
| Mark Whitton | Lone Star
04-Jul-25,
Honor And Fire |
| Mark Wilson | Canterbury Park
23-Aug-24,
Myownersbroke |
| Mark Wright | Pinjarra Park
06-Jun-21,
Regent Star |
| Mark Young | Werribee
17-Feb-26,
Half Scotch |
| Markel Romero | Fair Grounds
22-Feb-25,
Scooteranddabigman |
| Marko Karan | Gold Coast
24-Aug-13,
Great Hope |
| Markus Klug | ParisLongchamp
05-Jul-24,
Aguirre |
| Marla Dayana Vargas | Lone Star Park
15-Nov-25,
Pine Valley |
| Marla Vargas | Remington Park
08-Dec-24,
Eurodoindonuts |
| Marlin A. Miller | Charles Town
13-Dec-25,
Warrior Bernice |
| Marlin Miller | Penn National
30-Aug-24,
Missing A Sock |
| Marquez | San Isidro
27-Jul-24,
Indio Piter |
| Marshall Allen | Emerald Downs
25-Aug-25,
Behind The Chair |
| Marshall Campbell | Charles Town
22-Mar-25,
Cats Diamond Boy |
| Marshall T. Campbell | |
| Martha Brister | Orange
20-Mar-17,
Laptop |
| Marthinus Nicolas Prinsloo | Scottsville
01-Mar-26,
Sneeuwitjie |
| Marti L. Rodriguez | Will Rogers Downs
03-Mar-26,
Aunt Lottie |
| Marti Rodriguez | Will Rogers Downs
24-Feb-26,
I'm Alive |
| Martin A Gorosurreta | Palermo
26-Jun-23,
Sofisticado Cap |
| Martin A Manganiello | Palermo
13-Aug-23,
Great Atractiva |
| Martin Allan | Belmont
28-Sep-22,
Hyperion Prince |
| Martin Alvarez | Palermo
04-Nov-23,
Declaring Love |
| Martin Alza | San Isidro
24-Jun-24,
La Purringa |
| Martin Ballanti | San Isidro
04-Jul-24,
Villera Sky |
| Martin Bourdieu | Turf Paradise
03-Mar-26,
Resultant |
| Martin Cabral | Sunland Park
04-Apr-25,
Rig Rider |
| Martin Carezzana | San Isidro
09-Dec-24,
Emerald John |
| Martin Casado | San Isidro
18-Jan-24,
Just Top |
| Martin Da Cruz | Te Rapa
30-Jan-26,
Ahro |
| Martin Da Cruz | Cambridge
18-Sep-24,
Elusive Fighter |
| Martin Domingo | San Isidro
05-Apr-25,
Codigo Postal |
| Martin Drexler | Gulfstream
02-Mar-26,
Ruse |
| Martin Dunne | Lingfield
01-Mar-26,
Henriette Ronner |