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Trainer Comparison

Statistics by Year:
Name Starters Starts Starts/
Starter 		1st 2nd 3rd Win % % 1st, 2nd or 3rd Earned Avg Earnings per Start Avg Earnings Per Starter Graded Stakes Win All Black-Type Win
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,031
Robert C. Kingston 9 16 1.78 1 2 1 6.25% 25% $17,342 $1,084 $1,927 0 0
Aidan P. O'Brien 9 10 1.11 1 1 2 10% 40% $1,327,750 $132,775 $147,528 1 1

Name Starters Starts Starts/
Starter 		1st 2nd 3rd Win % % 1st, 2nd or 3rd Earned Avg Earnings per Start Avg Earnings Per Starter Graded Stakes Win All Black-Type Win
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,031
Robert C. Kingston 12 52 4.33 7 8 9 13.46% 46.15% $110,357 $2,122 $9,196 0 0
Aidan P. O'Brien 18 21 1.17 5 0 1 23.81% 28.57% $4,493,000 $213,952 $249,611 5 5

Name Starters Starts Starts/
Starter 		1st 2nd 3rd Win % % 1st, 2nd or 3rd Earned Avg Earnings per Start Avg Earnings Per Starter Graded Stakes Win All Black-Type Win
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,031
Robert C. Kingston 11 42 3.82 2 8 2 4.76% 28.57% $51,222 $1,220 $4,657 0 0
Aidan P. O'Brien 11 12 1.09 4 2 1 33.33% 58.33% $4,252,500 $354,375 $386,591 4 4

Name Starters Starts Starts/
Starter 		1st 2nd 3rd Win % % 1st, 2nd or 3rd Earned Avg Earnings per Start Avg Earnings Per Starter Graded Stakes Win All Black-Type Win
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,031
Robert C. Kingston 9 34 3.78 3 5 3 8.82% 32.35% $77,339 $2,275 $8,593 0 0
Aidan P. O'Brien 9 13 1.44 3 1 2 23.08% 46.15% $3,253,500 $250,269 $361,500 3 3

Name Starters Starts Starts/
Starter 		1st 2nd 3rd Win % % 1st, 2nd or 3rd Earned Avg Earnings per Start Avg Earnings Per Starter Graded Stakes Win All Black-Type Win
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,031
Robert C. Kingston 13 44 3.38 3 2 3 6.82% 18.18% $36,988 $841 $2,845 0 0
Aidan P. O'Brien 11 18 1.64 3 2 1 16.67% 33.33% $2,614,228 $145,235 $237,657 3 3

Name Starters Starts Starts/
Starter 		1st 2nd 3rd Win % % 1st, 2nd or 3rd Earned Avg Earnings per Start Avg Earnings Per Starter Graded Stakes Win All Black-Type Win
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,031
Robert C. Kingston 9 41 4.56 8 5 9 19.51% 53.66% $67,721 $1,652 $7,525 0 0
Aidan P. O'Brien 12 13 1.08 1 5 1 7.69% 53.85% $3,349,000 $257,615 $279,083 1 1

Name Starters Starts Starts/
Starter 		1st 2nd 3rd Win % % 1st, 2nd or 3rd Earned Avg Earnings per Start Avg Earnings Per Starter Graded Stakes Win All Black-Type Win
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,031
Robert C. Kingston 9 29 3.22 4 2 4 13.79% 34.48% $29,678 $1,023 $3,298 0 0
Aidan P. O'Brien 21 33 1.57 0 5 4 0% 27.27% $2,857,247 $86,583 $136,059 0 0

Name Starters Starts Starts/
Starter 		1st 2nd 3rd Win % % 1st, 2nd or 3rd Earned Avg Earnings per Start Avg Earnings Per Starter Graded Stakes Win All Black-Type Win
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,031
Robert C. Kingston 13 61 4.69 7 6 7 11.48% 32.79% $62,352 $1,022 $4,796 0 0
Aidan P. O'Brien 22 36 1.64 2 2 4 5.56% 22.22% $3,674,400 $102,067 $167,018 2 2

Name Starters Starts Starts/
Starter 		1st 2nd 3rd Win % % 1st, 2nd or 3rd Earned Avg Earnings per Start Avg Earnings Per Starter Graded Stakes Win All Black-Type Win
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,031
Robert C. Kingston 12 68 5.67 2 11 13 2.94% 38.24% $81,204 $1,194 $6,767 0 0
Aidan P. O'Brien 25 34 1.36 2 5 4 5.88% 32.35% $3,855,623 $113,401 $154,225 1 2

Name Starters Starts Starts/
Starter 		1st 2nd 3rd Win % % 1st, 2nd or 3rd Earned Avg Earnings per Start Avg Earnings Per Starter Graded Stakes Win All Black-Type Win
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,031
Robert C. Kingston 13 84 6.46 6 10 8 7.14% 28.57% $94,221 $1,122 $7,248 0 0
Aidan P. O'Brien 18 23 1.28 2 2 3 8.7% 30.43% $4,176,822 $181,601 $232,046 2 2

Name Starters Starts Starts/
Starter 		1st 2nd 3rd Win % % 1st, 2nd or 3rd Earned Avg Earnings per Start Avg Earnings Per Starter Graded Stakes Win All Black-Type Win
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,031
Robert C. Kingston 14 76 5.43 11 5 8 14.47% 31.58% $109,622 $1,442 $7,830 0 0
Aidan P. O'Brien 11 12 1.09 3 1 1 25% 41.67% $2,789,003 $232,417 $253,546 3 3

Name Starters Starts Starts/
Starter 		1st 2nd 3rd Win % % 1st, 2nd or 3rd Earned Avg Earnings per Start Avg Earnings Per Starter Graded Stakes Win All Black-Type Win
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,031
Robert C. Kingston 15 59 3.93 5 5 7 8.47% 28.81% $67,981 $1,152 $4,532 0 0
Aidan P. O'Brien 13 15 1.15 1 2 0 6.67% 20% $1,186,520 $79,101 $91,271 1 1

Name Starters Starts Starts/
Starter 		1st 2nd 3rd Win % % 1st, 2nd or 3rd Earned Avg Earnings per Start Avg Earnings Per Starter Graded Stakes Win All Black-Type Win
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,031
Robert C. Kingston 17 92 5.41 6 16 11 6.52% 35.87% $104,558 $1,137 $6,150 0 0
Aidan P. O'Brien 11 13 1.18 3 1 1 23.08% 38.46% $6,564,667 $504,974 $596,788 3 3

Name Starters Starts Starts/
Starter 		1st 2nd 3rd Win % % 1st, 2nd or 3rd Earned Avg Earnings per Start Avg Earnings Per Starter Graded Stakes Win All Black-Type Win
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,031
Robert C. Kingston 20 113 5.65 8 11 13 7.08% 28.32% $86,456 $765 $4,323 0 0
Aidan P. O'Brien 14 22 1.57 2 2 2 9.09% 27.27% $4,298,711 $195,396 $307,051 2 2

Name Starters Starts Starts/
Starter 		1st 2nd 3rd Win % % 1st, 2nd or 3rd Earned Avg Earnings per Start Avg Earnings Per Starter Graded Stakes Win All Black-Type Win
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,031
Robert C. Kingston 8 48 6 6 3 3 12.5% 25% $46,636 $972 $5,830 0 0
Aidan P. O'Brien 17 25 1.47 7 2 2 28% 44% $5,351,315 $214,053 $314,783 7 7

Name Starters Starts Starts/
Starter 		1st 2nd 3rd Win % % 1st, 2nd or 3rd Earned Avg Earnings per Start Avg Earnings Per Starter Graded Stakes Win All Black-Type Win
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,031
Robert C. Kingston 14 55 3.93 6 3 8 10.91% 30.91% $48,409 $880 $3,458 0 0
Aidan P. O'Brien 6 6 1 1 0 0 16.67% 16.67% $1,219,174 $203,196 $203,196 1 1

Name Starters Starts Starts/
Starter 		1st 2nd 3rd Win % % 1st, 2nd or 3rd Earned Avg Earnings per Start Avg Earnings Per Starter Graded Stakes Win All Black-Type Win
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,031
Robert C. Kingston 10 67 6.7 13 11 13 19.4% 55.22% $141,685 $2,115 $14,169 0 1
Aidan P. O'Brien 9 9 1 1 1 0 11.11% 22.22% $406,800 $45,200 $45,200 0 1

Name Starters Starts Starts/
Starter 		1st 2nd 3rd Win % % 1st, 2nd or 3rd Earned Avg Earnings per Start Avg Earnings Per Starter Graded Stakes Win All Black-Type Win
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,031
Robert C. Kingston 17 73 4.29 6 5 8 8.22% 26.03% $82,828 $1,135 $4,872 0 0
Aidan P. O'Brien 10 10 1 0 4 1 0% 50% $1,838,850 $183,885 $183,885 0 0

Name Starters Starts Starts/
Starter 		1st 2nd 3rd Win % % 1st, 2nd or 3rd Earned Avg Earnings per Start Avg Earnings Per Starter Graded Stakes Win All Black-Type Win
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,031
Robert C. Kingston 16 85 5.31 13 10 15 15.29% 44.71% $269,213 $3,167 $16,826 0 1
Aidan P. O'Brien 9 9 1 0 2 0 0% 22.22% $891,664 $99,074 $99,074 0 0

Name Starters Starts Starts/
Starter 		1st 2nd 3rd Win % % 1st, 2nd or 3rd Earned Avg Earnings per Start Avg Earnings Per Starter Graded Stakes Win All Black-Type Win
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,031
Robert C. Kingston 19 107 5.63 14 15 13 13.08% 39.25% $220,163 $2,058 $11,588 0 2
Aidan P. O'Brien 8 11 1.38 1 1 2 9.09% 36.36% $760,796 $69,163 $95,100 1 1

Name Starters Starts Starts/
Starter 		1st 2nd 3rd Win % % 1st, 2nd or 3rd Earned Avg Earnings per Start Avg Earnings Per Starter Graded Stakes Win All Black-Type Win
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,031
Robert C. Kingston 20 113 5.65 11 19 14 9.73% 38.94% $234,239 $2,073 $11,712 0 2
Aidan P. O'Brien 10 17 1.7 2 1 1 11.76% 23.53% $1,911,847 $112,462 $191,185 2 2

Name Starters Starts Starts/
Starter 		1st 2nd 3rd Win % % 1st, 2nd or 3rd Earned Avg Earnings per Start Avg Earnings Per Starter Graded Stakes Win All Black-Type Win
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,031
Robert C. Kingston 23 104 4.52 17 7 9 16.35% 31.73% $312,027 $3,000 $13,566 0 2
Aidan P. O'Brien 11 17 1.55 0 1 6 0% 41.18% $1,409,078 $82,887 $128,098 0 0

Name Starters Starts Starts/
Starter 		1st 2nd 3rd Win % % 1st, 2nd or 3rd Earned Avg Earnings per Start Avg Earnings Per Starter Graded Stakes Win All Black-Type Win
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,031
Robert C. Kingston 14 52 3.71 5 3 6 9.62% 26.92% $83,086 $1,598 $5,935 0 1
Aidan P. O'Brien 10 15 1.5 2 3 3 13.33% 53.33% $2,528,032 $168,535 $252,803 2 2

Name Starters Starts Starts/
Starter 		1st 2nd 3rd Win % % 1st, 2nd or 3rd Earned Avg Earnings per Start Avg Earnings Per Starter Graded Stakes Win All Black-Type Win
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,031
Robert C. Kingston 3 16 5.33 0 1 1 0% 12.5% $4,566 $285 $1,522 0 0
Aidan P. O'Brien 12 15 1.25 3 2 2 20% 46.67% $3,307,391 $220,493 $275,616 3 3

Name Starters Starts Starts/
Starter 		1st 2nd 3rd Win % % 1st, 2nd or 3rd Earned Avg Earnings per Start Avg Earnings Per Starter Graded Stakes Win All Black-Type Win
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,031
Robert C. Kingston 2 16 8 1 1 2 6.25% 25% $8,853 $553 $4,427 0 0
Aidan P. O'Brien 10 16 1.6 2 2 2 12.5% 37.5% $2,045,375 $127,836 $204,538 2 2

Name Starters Starts Starts/
Starter 		1st 2nd 3rd Win % % 1st, 2nd or 3rd Earned Avg Earnings per Start Avg Earnings Per Starter Graded Stakes Win All Black-Type Win
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,031
Robert C. Kingston 2 13 6.5 3 1 1 23.08% 38.46% $12,353 $950 $6,177 0 0
Aidan P. O'Brien 10 13 1.3 2 2 0 15.38% 30.77% $1,850,856 $142,374 $185,086 2 2

Name Starters Starts Starts/
Starter 		1st 2nd 3rd Win % % 1st, 2nd or 3rd Earned Avg Earnings per Start Avg Earnings Per Starter Graded Stakes Win All Black-Type Win
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,031
Robert C. Kingston 4 10 2.5 1 1 0 10% 20% $4,674 $467 $1,169 0 0
Aidan P. O'Brien 5 5 1 0 0 1 0% 20% $81,920 $16,384 $16,384 0 0

Name Starters Starts Starts/
Starter 		1st 2nd 3rd Win % % 1st, 2nd or 3rd Earned Avg Earnings per Start Avg Earnings Per Starter Graded Stakes Win All Black-Type Win
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,031
Robert C. Kingston 8 32 4 4 5 5 12.5% 43.75% $22,272 $696 $2,784 0 0
Aidan P. O'Brien 1 1 1 0 0 0 0% 0% $0 $0 $0 0 0

Name Starters Starts Starts/
Starter 		1st 2nd 3rd Win % % 1st, 2nd or 3rd Earned Avg Earnings per Start Avg Earnings Per Starter Graded Stakes Win All Black-Type Win
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,031
Robert C. Kingston 3 6 2 2 0 2 33.33% 66.67% $6,602 $1,100 $2,201 0 0
Aidan P. O'Brien 1 1 1 0 0 0 0% 0% $0 $0 $0 0 0