| Number of Mares Reported Bred to Thoroughbred Stallions in 2021 | |||||
| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z | |||||
| Stallion | Mares Bred | State | |||
| G. G. Ryder | 10 | CA | |||
| Galapagos | 3 | PA | |||
| Gallant Son | 2 | WA | |||
| Galvan | 1 | PR | |||
| Gamble's Exchange | 11 | ON | |||
| Game Winner | 157 | KY | |||
| Gandhi | 8 | AR | |||
| Gato Del Oro | 36 | CA | |||
| Gattopardo | 7 | WV | |||
| Gayego | 3 | AB | |||
| Gazebo | 5 | MN | |||
| Gem Heist | 15 | CA | |||
| Gemologist | 35 | LA | |||
| General a Rod | 9 | IN | |||
| Gentlemen's Bet | 22 | AR | |||
| Get Rich Quick | 3 | PR | |||
| Get Stormy | 76 | KY | |||
| Ghaaleb | 9 | IL | |||
| Ghostzapper | 99 | KY | |||
| Ghurair | 4 | TX | |||
| Giacomo | 5 | OR | |||
| Giant Expectations | 10 | NE | |||
| Giant Surprise | 5 | NY | |||
| Gift Box | 112 | KY | |||
| Gig Harbor | 21 | CA | |||
| Gio Ponti | 9 | KY | |||
| Girvin | 63 | FL | |||
| Global Campaign | 177 | KY | |||
| Global Power | 4 | OH | |||
| Global Response | 2 | FL | |||
| Go for Four | 1 | NM | |||
| Go Red Go | 1 | TX | |||
| Gold Aly | 3 | WA | |||
| Gold for Cash | 10 | NE | |||
| Gold Schleiger | 2 | NE | |||
| Golddigger's Boy | 5 | PA | |||
| Golden Balls (IRE) | 2 | CA | |||
| Golden Child | 1 | CA | |||
| Golden Lad | 77 | MD | |||
| Golden Years | 19 | WV | |||
| Goldencents | 230 | KY | |||
| Gone Astray | 7 | FL | |||
| Good Bye Greg | 3 | FL | |||
| Good Magic | 92 | KY | |||
| Good Samaritan | 87 | KY | |||
| Gormley | 158 | KY | |||
| Gospel Tiz Key | 17 | OK | |||
| Gotta Curlin | 3 | ND | |||
| Gotta Runaway | 1 | OH | |||
| Gottcha Pharm | 2 | AR | |||
| Govenor Charlie | 7 | CA | |||
| Graydar | 53 | CA | |||
| Grazen | 66 | CA | |||
| Great Exuma | 6 | ND | |||
| Great Notion | 49 | MD | |||
| Great Stuff | 11 | CA | |||
| Great Success | 1 | FL | |||
| Greatbullsoffire | 3 | PA | |||
| Greatness | 5 | FL | |||
| Greeley's Conquest | 12 | PR | |||
| Greenpointcrusader | 13 | FL | |||
| Grey Swallow (IRE) | 1 | VA | |||
| Grey Wizard | 1 | MI | |||
| Grizzly | 4 | OH | |||
| Guest Star | 1 | IL | |||
| Guilt Trip | 5 | LA | |||
| Gun Runner | 168 | KY | |||
| Gunnevera | 105 | FL | |||
| Guys Reward | 5 | IN | |||