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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
Domingo Chacaltana 7 43 6.14 7 6 5 16.28% 41.86% $112,798 $2,623 $16,114 0 0
Joseph Patrick O'Brien 4 5 1.25 1 0 0 20% 20% $1,570,000 $314,000 $392,500 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
Domingo Chacaltana 7 16 2.29 1 2 0 6.25% 18.75% $18,749 $1,172 $2,678 0 0
Joseph Patrick O'Brien 5 5 1 0 0 2 0% 40% $300,000 $60,000 $60,000 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
Domingo Chacaltana 9 39 4.33 3 3 5 7.69% 28.21% $62,359 $1,599 $6,929 0 0
Joseph Patrick O'Brien 3 3 1 0 0 0 0% 0% $41,313 $13,771 $13,771 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
Domingo Chacaltana 10 41 4.1 4 3 6 9.76% 31.71% $81,698 $1,993 $8,170 0 0
Joseph Patrick O'Brien 6 7 1.17 0 1 1 0% 28.57% $195,063 $27,866 $32,511 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
Domingo Chacaltana 11 57 5.18 6 8 9 10.53% 40.35% $147,768 $2,592 $13,433 0 0
Joseph Patrick O'Brien 10 15 1.5 1 2 2 6.67% 33.33% $540,688 $36,046 $54,069 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
Domingo Chacaltana 11 38 3.45 1 2 4 2.63% 18.42% $72,944 $1,920 $6,631 0 0
Joseph Patrick O'Brien 6 6 1 2 1 0 33.33% 50% $911,500 $151,917 $151,917 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
Domingo Chacaltana 15 64 4.27 3 5 9 4.69% 26.56% $83,839 $1,310 $5,589 0 0
Joseph Patrick O'Brien 3 3 1 0 0 0 0% 0% $50,000 $16,667 $16,667 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
Domingo Chacaltana 16 120 7.5 11 14 19 9.17% 36.67% $169,657 $1,414 $10,604 0 0
Joseph Patrick O'Brien 5 5 1 1 0 1 20% 40% $1,133,360 $226,672 $226,672 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
Domingo Chacaltana 9 113 12.56 10 18 15 8.85% 38.05% $156,303 $1,383 $17,367 0 0
Joseph Patrick O'Brien 1 1 1 0 0 0 0% 0% $7,440 $7,440 $7,440 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
Domingo Chacaltana 18 135 7.5 6 14 22 4.44% 31.11% $86,221 $639 $4,790 0 0
Joseph Patrick O'Brien 2 2 1 0 0 0 0% 0% $22,000 $11,000 $11,000 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
Domingo Chacaltana 19 164 8.63 8 19 39 4.88% 40.24% $158,697 $968 $8,352 0 0
Joseph Patrick O'Brien 1 1 1 0 0 0 0% 0% $0 $0 $0 0 0