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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
Terry J. Brennan 4 8 2 0 1 0 0% 12.5% $9,174 $1,147 $2,294 0 0
John A. Shirreffs 8 8 1 1 0 1 12.5% 25% $139,940 $17,493 $17,493 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
Terry J. Brennan 7 17 2.43 1 3 1 5.88% 29.41% $58,981 $3,469 $8,426 0 0
John A. Shirreffs 23 76 3.3 11 17 18 14.47% 60.53% $2,665,940 $35,078 $115,910 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
Terry J. Brennan 13 46 3.54 2 3 4 4.35% 19.57% $161,673 $3,515 $12,436 0 0
John A. Shirreffs 43 117 2.72 10 16 23 8.55% 41.88% $1,040,510 $8,893 $24,198 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
Terry J. Brennan 13 40 3.08 3 2 7 7.5% 30% $242,264 $6,057 $18,636 0 0
John A. Shirreffs 31 95 3.06 11 6 18 11.58% 36.84% $1,004,900 $10,578 $32,416 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
Terry J. Brennan 13 38 2.92 1 5 3 2.63% 23.68% $166,309 $4,377 $12,793 0 0
John A. Shirreffs 35 100 2.86 14 13 12 14% 39% $1,956,365 $19,564 $55,896 5 6

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
Terry J. Brennan 6 33 5.5 1 4 5 3.03% 30.3% $108,659 $3,293 $18,110 0 0
John A. Shirreffs 31 111 3.58 18 20 22 16.22% 54.05% $2,056,016 $18,523 $66,323 5 6

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
Terry J. Brennan 5 19 3.8 2 2 3 10.53% 36.84% $83,310 $4,385 $16,662 0 0
John A. Shirreffs 26 77 2.96 13 15 9 16.88% 48.05% $1,746,160 $22,677 $67,160 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
Terry J. Brennan 5 7 1.4 0 1 0 0% 14.29% $20,033 $2,862 $4,007 0 0
John A. Shirreffs 28 117 4.18 26 19 17 22.22% 52.99% $1,921,538 $16,423 $68,626 5 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
Terry J. Brennan 3 10 3.33 0 1 1 0% 20% $20,053 $2,005 $6,684 0 0
John A. Shirreffs 27 98 3.63 9 12 19 9.18% 40.82% $598,395 $6,106 $22,163 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
Terry J. Brennan 6 17 2.83 0 1 0 0% 5.88% $7,942 $467 $1,324 0 0
John A. Shirreffs 24 70 2.92 6 15 9 8.57% 42.86% $1,349,800 $19,283 $56,242 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
Terry J. Brennan 6 16 2.67 0 0 4 0% 25% $6,863 $429 $1,144 0 0
John A. Shirreffs 25 93 3.72 9 11 21 9.68% 44.09% $927,483 $9,973 $37,099 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
Terry J. Brennan 2 8 4 0 1 2 0% 37.5% $10,200 $1,275 $5,100 0 0
John A. Shirreffs 22 79 3.59 13 13 6 16.46% 40.51% $927,764 $11,744 $42,171 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
Terry J. Brennan 3 10 3.33 0 1 0 0% 10% $15,644 $1,564 $5,215 0 0
John A. Shirreffs 42 126 3 13 19 19 10.32% 40.48% $1,485,527 $11,790 $35,370 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
Terry J. Brennan 3 6 2 0 0 1 0% 16.67% $4,508 $751 $1,503 0 0
John A. Shirreffs 50 140 2.8 23 20 13 16.43% 40% $1,734,523 $12,389 $34,690 2 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
Terry J. Brennan 4 8 2 0 0 0 0% 0% $1,876 $235 $469 0 0
John A. Shirreffs 49 139 2.84 20 23 25 14.39% 48.92% $1,618,296 $11,642 $33,026 3 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
Terry J. Brennan 3 12 4 2 2 1 16.67% 41.67% $36,865 $3,072 $12,288 0 0
John A. Shirreffs 46 144 3.13 25 19 22 17.36% 45.83% $2,000,149 $13,890 $43,482 4 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
Terry J. Brennan 14 43 3.07 4 2 7 9.3% 30.23% $48,591 $1,130 $3,471 0 0
John A. Shirreffs 31 84 2.71 14 9 14 16.67% 44.05% $3,099,339 $36,897 $99,979 8 9

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
Terry J. Brennan 8 45 5.63 4 6 6 8.89% 35.56% $52,617 $1,169 $6,577 0 0
John A. Shirreffs 36 99 2.75 21 7 22 21.21% 50.51% $5,706,892 $57,645 $158,525 11 12

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
Terry J. Brennan 12 43 3.58 2 2 3 4.65% 16.28% $36,142 $841 $3,012 0 0
John A. Shirreffs 41 105 2.56 18 16 14 17.14% 45.71% $3,970,093 $37,810 $96,832 9 9

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
Terry J. Brennan 11 60 5.45 7 9 10 11.67% 43.33% $110,545 $1,842 $10,050 0 0
John A. Shirreffs 47 115 2.45 27 12 15 23.48% 46.96% $3,007,147 $26,149 $63,982 7 9

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
Terry J. Brennan 28 114 4.07 18 10 12 15.79% 35.09% $301,436 $2,644 $10,766 0 1
John A. Shirreffs 48 140 2.92 26 19 22 18.57% 47.86% $2,562,058 $18,300 $53,376 6 8

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
Terry J. Brennan 27 104 3.85 12 10 12 11.54% 32.69% $202,755 $1,950 $7,509 0 0
John A. Shirreffs 59 163 2.76 34 17 25 20.86% 46.63% $3,649,864 $22,392 $61,862 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
Terry J. Brennan 20 96 4.8 20 17 11 20.83% 50% $244,342 $2,545 $12,217 0 0
John A. Shirreffs 61 182 2.98 23 18 25 12.64% 36.26% $1,453,958 $7,989 $23,835 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
Terry J. Brennan 21 98 4.67 16 14 8 16.33% 38.78% $172,245 $1,758 $8,202 0 0
John A. Shirreffs 62 163 2.63 33 18 26 20.25% 47.24% $2,240,772 $13,747 $36,141 6 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
Terry J. Brennan 29 74 2.55 5 8 11 6.76% 32.43% $99,300 $1,342 $3,424 0 0
John A. Shirreffs 46 147 3.2 25 19 26 17.01% 47.62% $1,834,772 $12,481 $39,886 3 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
Terry J. Brennan 26 95 3.65 8 8 15 8.42% 32.63% $230,452 $2,426 $8,864 0 0
John A. Shirreffs 50 154 3.08 20 14 21 12.99% 35.71% $976,776 $6,343 $19,536 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
Terry J. Brennan 15 95 6.33 13 9 11 13.68% 34.74% $440,835 $4,640 $29,389 0 3
John A. Shirreffs 40 119 2.98 27 25 16 22.69% 57.14% $1,931,038 $16,227 $48,276 4 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
Terry J. Brennan 22 111 5.05 13 12 9 11.71% 30.63% $429,005 $3,865 $19,500 0 3
John A. Shirreffs 24 75 3.13 30 10 8 40% 64% $2,076,363 $27,685 $86,515 7 9

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
Terry J. Brennan 20 84 4.2 17 17 8 20.24% 50% $574,968 $6,845 $28,748 0 2
John A. Shirreffs 21 66 3.14 18 15 8 27.27% 62.12% $809,229 $12,261 $38,535 2 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
Terry J. Brennan 23 90 3.91 10 13 15 11.11% 42.22% $186,872 $2,076 $8,125 0 0
John A. Shirreffs 17 59 3.47 10 8 8 16.95% 44.07% $641,187 $10,868 $37,717 1 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
Terry J. Brennan 20 79 3.95 7 7 9 8.86% 29.11% $184,775 $2,339 $9,239 0 0
John A. Shirreffs 18 61 3.39 16 10 5 26.23% 50.82% $545,488 $8,942 $30,305 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
Terry J. Brennan 16 85 5.31 12 13 20 14.12% 52.94% $257,821 $3,033 $16,114 0 0
John A. Shirreffs 19 48 2.53 7 8 6 14.58% 43.75% $309,500 $6,448 $16,289 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
Terry J. Brennan 17 107 6.29 13 16 14 12.15% 40.19% $231,996 $2,168 $13,647 0 0
John A. Shirreffs 15 66 4.4 10 10 9 15.15% 43.94% $450,514 $6,826 $30,034 1 2