| Marcelino Torres | Churchill Downs
14-Sep-26,
Mescat |
| Marcelino Trujillo | Emerald Downs
31-Aug-26,
Luna Linda |
| Marcello Borioni | Gavea
04-Dec-24,
Que Noble |
| Marcelo A Arce | La Plata
21-Jun-23,
El Naife |
| Marcelo A Degregorio | Palermo
14-Nov-23,
Easy Craf |
| Marcelo A Santiago | Palermo
09-Jun-23,
Twipper |
| Marcelo A Tartarelli | San Isidro
17-Dec-23,
R'sweet Tein |
| Marcelo Aparicio | San Isidro
27-Jun-24,
Sol Valioso |
| Marcelo Arenas | Saratoga
29-Aug-26,
Curlin's Magic |
| Marcelo Berti | San Isidro
23-May-24,
Sir Edward |
| Marcelo Berutti | San Isidro
13-Jul-23,
Colorete Ness |
| Marcelo Blanco | San Isidro
27-Feb-25,
Quiara |
| Marcelo Clementi | San Isidro
04-May-23,
Buona Vistta |
| Marcelo Degregorio | San Isidro
22-Jul-24,
Endor Rye |
| Marcelo Dominguez | San Isidro
10-Apr-25,
Guaicaipuro |
| Marcelo E Berti | Palermo
07-Oct-23,
Full Amoroso |
| Marcelo E Busilacchi | Palermo
14-Nov-23,
Que Fineza |
| Marcelo E Caimari | San Isidro
01-May-25,
Chacha Vision |
| Marcelo F Pascal | |
| Marcelo Ferraguti | San Isidro
07-Sep-23,
Amigo Ninja |
| Marcelo Furrer | San Isidro
15-May-25,
Lear Blue |
| Marcelo J Perez | Palermo
12-Nov-23,
Amiguitainterminable |
| Marcelo Lafuente | San Isidro
22-Feb-25,
J Adams |
| Marcelo Lopez | San Isidro
05-Apr-25,
Cleton |
| Marcelo M Grioni | San Isidro
17-Apr-25,
Magica Edition |
| Marcelo Mazza | San Isidro
05-Sep-24,
Dame Felicidad |
| Marcelo Medina | San Isidro
07-Mar-24,
Curioso Pochi |
| Marcelo N Ferraguti | Palermo
06-Jun-23,
Coranzuli |
| Marcelo N Reale | San Isidro
28-Oct-23,
Pagale Vos |
| Marcelo P Berutti | Palermo
07-Nov-23,
Soy Valid |
| Marcelo Perez | San Isidro
05-May-25,
Senor Pendibene |
| Marcelo Polanco | Del Mar
11-Aug-25,
Vitalera |
| Marcelo R Lopez | Palermo
09-Oct-23,
El Nieto Del Zar |
| Marcelo Reale | San Isidro
09-Jan-25,
Rio Roma |
| Marcelo Reyes | |
| Marcelo Reyes, Jr. | Lone Star Park
12-Sep-26,
Favorite Blood |
| Marcelo S Sueldo | San Isidro
26-Nov-23,
Fuerzatitan |
| Marcelo Santiago | San Isidro
01-May-25,
Wing Royale |
| Marcelo Silva | Gavea
19-May-25,
Marrocos |
| Marcelo Sueldo | San Isidro
30-Jun-24,
El Eminente |
| Marcelo Tartarelli | San Isidro
16-Oct-23,
Evening Wind |
| Marcelo W Lucia | Palermo
09-Jun-23,
Talento Vocal |
| Marchell Roberts | Lone Star Park
18-Sep-26,
Eternal Sonata |
| Marcia Stortz | Los Alamitos Racecourse
14-Sep-26,
Johnlino |
| Marcial Cornejo | Gulfstream
20-Sep-26,
R Tun Who |
| Marcial Navarro | Gulfstream
07-Dec-22,
Prince Maior |
| Marcio Rocha | Gavea
23-Apr-25,
Summer Rain |
| Marco A S S | Valparaiso Sporting Club
14-Nov-23,
Camavinga |
| Marco A. Flores | Sunray Park
18-May-26,
Rhocket |
| Marco Adair Chavez-gutierrez | Will Rogers Downs
15-Sep-26,
Royal Candy P |
| Marco Botti | |
| Marco Ccamaque | Presque Isle Downs
19-Sep-26,
Classic Richie |
| Marco Flores | Sunland Park
05-Apr-25,
Buymyladyacorona |
| Marco Ibarra | Thistledown
18-Sep-26,
Mr Loooch |
| Marco O O | Hipodromo Chile
04-May-25,
Sukaina |
| Marco P. Salazar | Laurel Park
14-Sep-26,
Elvis Himself |
| Marco Salazar | Pimlico
16-May-25,
Florina |
| Marcos A Giammatolo | Palermo
13-Jun-23,
Teodoro Machin |
| Marcos A Medina | Palermo
14-Nov-23,
Milonga Salvaje |
| Marcos Contreras | Laurel Park
02-Oct-25,
Janstar |