| Irvin G. Flores | |
| Irvin Moreno | Hawthorne
31-Oct-25,
Handsoffthegoods |
| Irving Fournier | Sunland Park
09-Mar-25,
Little Scary Chic |
| Irving Rodriguez | Penn National
05-Dec-25,
Cobble Road |
| Isaac Barahona | Charles Town
29-Nov-25,
Verdi's Surprise |
| Isaac F F | Hipodromo Chile
18-May-25,
Mestiza Flor |
| Isai Gonzalez | Fair Grounds
01-Mar-25,
Kajun Karma |
| Isai V. Gonzalez | |
| Isaiah Ortiz | Turf Paradise
04-Dec-25,
Lansdowne |
| Isamu Kubo | Kawasaki
15-Dec-25,
Marron Fuerte |
| Isao Hattori | Nagoya
10-Dec-25,
Cosmo Queen Bee |
| Isao Nagakura | Sonoda
09-Dec-25,
Cortado |
| Isao Nishikimi | Nagoya
10-Dec-25,
Yamori Atsumare |
| Isao Sasaki | Kawasaki
15-Dec-25,
Miharunrun |
| Isao Sugawara | Mizusawa
15-Dec-25,
Galaxy Knight |
| Isauro Guillen | |
| Isauro Guillen | Emerald Downs
31-Aug-25,
Max's Maxine |
| Isauro M. Guillen | |
| Ishibashi Mitsuru | Sonoda
11-Dec-25,
Vatreni |
| Isidoro Alvarez | Horseshoe Indianapolis
27-Oct-23,
Nachoclov |
| Isidro Castro | Hawthorne
04-Aug-25,
Remember The Maine |
| Isidro Hinojosa | Lone Star Park
15-Nov-25,
Ice For Real |
| Isidro Mancillas-lopez | Lone Star Park
16-Nov-25,
Relagate Pyc Yg |
| Isidro Tamayo | Los Alamitos Racecourse
06-Dec-25,
Brookys Gal |
| Ismael Bahena | Turfway Park
12-Dec-25,
Caltha |
| Ismael Villalobos | Zia Park
08-Dec-25,
Real Runaway Rime |
| Israel Acevedo | Mahoning Valley
05-Dec-25,
Sacos Stogie |
| Israel Flores | Mahoning Valley
03-Dec-25,
Take Dictation |
| Israel Garcia | Churchill Downs
20-Jun-25,
Release Mccraken |
| Israel J. Garcia | |
| Issei Murata | Nakayama
13-Dec-25,
Music Rain |
| Ivan Becerra | Golden Gate Fields
09-Jun-24,
Workday |
| Ivan Becerra Perez | Los Alamitos Racecourse
14-Dec-25,
Z Boss Sauce |
| Ivan Benlloch | San Isidro
05-Sep-24,
Belerofonte |
| Ivan Calderon | Mahoning Valley
12-Dec-25,
Big Ginger |
| Ivan Duke | Sunshine Coast
09-Nov-13,
Red Hornet |
| Ivan Haggerty | Belmont
23-Jun-21,
Stockyard Gossip |
| Ivan Jeronimo | Gavea
09-Dec-24,
Pankhuri |
| Ivan Lister | Kyneton
18-Nov-25,
Ollandia Beach |
| Ivan Nolte | Hamilton
21-Sep-15,
Blaney |
| Ivan Vazquez | Mahoning Valley
04-Dec-25,
Jac's Cocoabella |
| Ivan Vinardi | San Isidro
30-Nov-22,
Manzano Amargo |
| Ivan Wyk | Scottsville
01-Feb-23,
Imperial Bliss |
| Ivo Simonovich | San Isidro
09-Mar-25,
Biphyla |