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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
Valora A. Testerman 2 7 3.5 1 2 1 14.29% 57.14% $36,175 $5,168 $18,088 0 0
William D. Cowans 35 69 1.97 10 14 7 14.49% 44.93% $319,839 $4,635 $9,138 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
Valora A. Testerman 3 12 4 0 2 4 0% 50% $25,900 $2,158 $8,633 0 0
William D. Cowans 62 169 2.73 30 29 32 17.75% 53.85% $1,404,995 $8,314 $22,661 0 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
Valora A. Testerman 3 9 3 1 0 1 11.11% 22.22% $23,485 $2,609 $7,828 0 0
William D. Cowans 52 146 2.81 33 19 28 22.6% 54.79% $1,590,799 $10,896 $30,592 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
Valora A. Testerman 3 15 5 0 0 2 0% 13.33% $20,470 $1,365 $6,823 0 0
William D. Cowans 67 172 2.57 45 33 19 26.16% 56.4% $1,468,536 $8,538 $21,918 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
Valora A. Testerman 3 24 8 2 1 3 8.33% 25% $59,044 $2,460 $19,681 0 0
William D. Cowans 56 151 2.7 36 27 21 23.84% 55.63% $1,151,306 $7,625 $20,559 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
Valora A. Testerman 8 35 4.38 1 2 7 2.86% 28.57% $67,033 $1,915 $8,379 0 0
William D. Cowans 36 129 3.58 33 23 26 25.58% 63.57% $701,887 $5,441 $19,497 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
Valora A. Testerman 7 43 6.14 2 3 3 4.65% 18.6% $89,672 $2,085 $12,810 0 0
William D. Cowans 39 109 2.79 26 25 15 23.85% 60.55% $543,244 $4,984 $13,929 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
Valora A. Testerman 8 61 7.63 7 3 8 11.48% 29.51% $166,544 $2,730 $20,818 0 0
William D. Cowans 40 147 3.68 34 34 19 23.13% 59.18% $723,093 $4,919 $18,077 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
Valora A. Testerman 6 39 6.5 5 2 3 12.82% 25.64% $117,957 $3,025 $19,660 0 0
William D. Cowans 48 165 3.44 35 37 23 21.21% 57.58% $865,284 $5,244 $18,027 0 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
Valora A. Testerman 3 25 8.33 2 2 3 8% 28% $49,870 $1,995 $16,623 0 0
William D. Cowans 65 187 2.88 41 25 27 21.93% 49.73% $860,503 $4,602 $13,239 0 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
Valora A. Testerman 7 33 4.71 2 1 1 6.06% 12.12% $38,360 $1,162 $5,480 0 0
William D. Cowans 55 179 3.25 41 38 26 22.91% 58.66% $865,135 $4,833 $15,730 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
Valora A. Testerman 9 54 6 1 5 7 1.85% 24.07% $66,924 $1,239 $7,436 0 0
William D. Cowans 46 156 3.39 38 27 19 24.36% 53.85% $829,684 $5,318 $18,037 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
Valora A. Testerman 11 72 6.55 3 8 6 4.17% 23.61% $119,102 $1,654 $10,827 0 0
William D. Cowans 38 131 3.45 50 27 7 38.17% 64.12% $573,130 $4,375 $15,082 0 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
Valora A. Testerman 17 99 5.82 9 6 6 9.09% 21.21% $179,613 $1,814 $10,565 0 0
William D. Cowans 42 152 3.62 53 25 21 34.87% 65.13% $540,009 $3,553 $12,857 0 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
Valora A. Testerman 20 133 6.65 7 12 12 5.26% 23.31% $194,334 $1,461 $9,717 0 0
William D. Cowans 39 126 3.23 40 20 17 31.75% 61.11% $447,612 $3,552 $11,477 0 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
Valora A. Testerman 22 149 6.77 11 11 14 7.38% 24.16% $259,949 $1,745 $11,816 0 1
William D. Cowans 49 198 4.04 51 43 24 25.76% 59.6% $510,396 $2,578 $10,416 0 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
Valora A. Testerman 21 120 5.71 14 19 18 11.67% 42.5% $249,145 $2,076 $11,864 0 0
William D. Cowans 59 209 3.54 74 40 29 35.41% 68.42% $762,525 $3,648 $12,924 0 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
Valora A. Testerman 19 105 5.53 10 15 17 9.52% 40% $292,917 $2,790 $15,417 0 0
William D. Cowans 39 177 4.54 50 34 27 28.25% 62.71% $652,411 $3,686 $16,728 0 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
Valora A. Testerman 23 102 4.43 9 7 13 8.82% 28.43% $223,568 $2,192 $9,720 0 0
William D. Cowans 27 128 4.74 28 21 16 21.88% 50.78% $279,191 $2,181 $10,340 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
Valora A. Testerman 24 115 4.79 5 17 12 4.35% 29.57% $173,320 $1,507 $7,222 0 0
William D. Cowans 33 170 5.15 48 24 22 28.24% 55.29% $342,283 $2,013 $10,372 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
Valora A. Testerman 23 93 4.04 6 6 5 6.45% 18.28% $176,290 $1,896 $7,665 0 0
William D. Cowans 32 170 5.31 41 25 17 24.12% 48.82% $462,079 $2,718 $14,440 0 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
Valora A. Testerman 39 149 3.82 7 17 15 4.7% 26.17% $180,635 $1,212 $4,632 0 0
William D. Cowans 28 150 5.36 26 25 18 17.33% 46% $220,901 $1,473 $7,889 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
Valora A. Testerman 43 196 4.56 15 15 29 7.65% 30.1% $265,454 $1,354 $6,173 0 0
William D. Cowans 21 137 6.52 29 27 17 21.17% 53.28% $164,230 $1,199 $7,820 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
Valora A. Testerman 45 215 4.78 18 16 28 8.37% 28.84% $403,101 $1,875 $8,958 0 2
William D. Cowans 16 103 6.44 26 25 10 25.24% 59.22% $151,837 $1,474 $9,490 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
Valora A. Testerman 55 246 4.47 20 20 25 8.13% 26.42% $377,171 $1,533 $6,858 0 0
William D. Cowans 19 102 5.37 17 19 12 16.67% 47.06% $144,653 $1,418 $7,613 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
Valora A. Testerman 48 227 4.73 22 20 26 9.69% 29.96% $649,283 $2,860 $13,527 1 6
William D. Cowans 18 93 5.17 16 15 9 17.2% 43.01% $108,051 $1,162 $6,003 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
Valora A. Testerman 36 175 4.86 7 19 20 4% 26.29% $306,174 $1,750 $8,505 1 1
William D. Cowans 5 22 4.4 3 0 4 13.64% 31.82% $17,188 $781 $3,438 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
Valora A. Testerman 31 143 4.61 12 12 10 8.39% 23.78% $194,559 $1,361 $6,276 0 1
William D. Cowans 4 30 7.5 3 7 5 10% 50% $27,613 $920 $6,903 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
Valora A. Testerman 33 145 4.39 15 14 16 10.34% 31.03% $245,274 $1,692 $7,433 0 0
William D. Cowans 12 44 3.67 7 8 7 15.91% 50% $48,715 $1,107 $4,060 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
Valora A. Testerman 37 189 5.11 14 12 7 7.41% 17.46% $145,987 $772 $3,946 0 0
William D. Cowans 9 42 4.67 6 4 3 14.29% 30.95% $25,382 $604 $2,820 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
Valora A. Testerman 35 129 3.69 10 4 10 7.75% 18.6% $102,251 $793 $2,921 0 0
William D. Cowans 8 41 5.13 9 3 7 21.95% 46.34% $33,425 $815 $4,178 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
Valora A. Testerman 7 39 5.57 1 3 3 2.56% 17.95% $20,363 $522 $2,909 0 0
William D. Cowans 4 21 5.25 5 4 1 23.81% 47.62% $16,869 $803 $4,217 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
Valora A. Testerman 7 57 8.14 6 5 8 10.53% 33.33% $28,660 $503 $4,094 0 0
William D. Cowans 4 38 9.5 3 2 5 7.89% 26.32% $12,184 $321 $3,046 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
Valora A. Testerman 17 93 5.47 3 10 8 3.23% 22.58% $40,615 $437 $2,389 0 0
William D. Cowans 3 7 2.33 1 1 0 14.29% 28.57% $2,632 $376 $877 0 0