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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
David G. Donk 54 223 4.13 19 20 19 8.52% 26.01% $1,369,668 $6,142 $25,364 0 1
Ralph R. Riviezzo 2 2 1 1 0 0 50% 50% $16,010 $8,005 $8,005 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
David G. Donk 62 224 3.61 28 30 24 12.5% 36.61% $2,115,778 $9,445 $34,125 0 3
Ralph R. Riviezzo 39 186 4.77 27 25 35 14.52% 46.77% $701,403 $3,771 $17,985 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
David G. Donk 68 298 4.38 30 42 34 10.07% 35.57% $2,354,928 $7,902 $34,631 0 2
Ralph R. Riviezzo 40 208 5.2 31 31 30 14.9% 44.23% $785,151 $3,775 $19,629 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
David G. Donk 65 294 4.52 21 29 41 7.14% 30.95% $1,512,088 $5,143 $23,263 0 0
Ralph R. Riviezzo 20 108 5.4 6 10 12 5.56% 25.93% $172,125 $1,594 $8,606 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
David G. Donk 60 286 4.77 34 45 53 11.89% 46.15% $2,435,461 $8,516 $40,591 0 1
Ralph R. Riviezzo 50 233 4.66 19 36 27 8.15% 35.19% $551,431 $2,367 $11,029 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
David G. Donk 63 321 5.1 34 34 41 10.59% 33.96% $2,167,533 $6,752 $34,405 0 2
Ralph R. Riviezzo 20 98 4.9 9 13 16 9.18% 38.78% $247,304 $2,524 $12,365 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
David G. Donk 56 321 5.73 36 41 47 11.21% 38.63% $1,958,337 $6,101 $34,970 0 0
Ralph R. Riviezzo 11 64 5.82 0 6 9 0% 23.44% $102,916 $1,608 $9,356 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
David G. Donk 58 251 4.33 26 30 30 10.36% 34.26% $1,838,710 $7,326 $31,702 0 2
Ralph R. Riviezzo 9 54 6 2 2 3 3.7% 12.96% $110,154 $2,040 $12,239 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
David G. Donk 49 238 4.86 28 29 34 11.76% 38.24% $1,971,248 $8,283 $40,230 1 4
Ralph R. Riviezzo 4 5 1.25 1 0 1 20% 40% $15,558 $3,112 $3,890 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
David G. Donk 41 202 4.93 26 27 23 12.87% 37.62% $1,654,500 $8,191 $40,354 0 3
Ralph R. Riviezzo 6 41 6.83 4 8 7 9.76% 46.34% $107,839 $2,630 $17,973 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
David G. Donk 30 118 3.93 14 14 16 11.86% 37.29% $1,064,336 $9,020 $35,478 1 2
Ralph R. Riviezzo 10 32 3.2 1 8 3 3.13% 37.5% $101,130 $3,160 $10,113 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
David G. Donk 33 168 5.09 19 24 22 11.31% 38.69% $1,327,266 $7,900 $40,220 0 4
Ralph R. Riviezzo 16 77 4.81 2 4 1 2.6% 9.09% $105,355 $1,368 $6,585 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
David G. Donk 37 184 4.97 18 21 20 9.78% 32.07% $863,325 $4,692 $23,333 0 3
Ralph R. Riviezzo 17 90 5.29 7 7 8 7.78% 24.44% $202,074 $2,245 $11,887 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
David G. Donk 38 196 5.16 22 21 22 11.22% 33.16% $980,088 $5,000 $25,792 1 3
Ralph R. Riviezzo 28 141 5.04 10 8 12 7.09% 21.28% $310,181 $2,200 $11,078 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
David G. Donk 51 211 4.14 24 30 32 11.37% 40.76% $1,151,294 $5,456 $22,574 0 3
Ralph R. Riviezzo 22 123 5.59 7 4 4 5.69% 12.2% $170,799 $1,389 $7,764 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
David G. Donk 46 202 4.39 24 25 35 11.88% 41.58% $1,351,410 $6,690 $29,378 1 1
Ralph R. Riviezzo 21 138 6.57 7 19 11 5.07% 26.81% $281,044 $2,037 $13,383 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
David G. Donk 70 283 4.04 33 32 31 11.66% 33.92% $1,502,565 $5,309 $21,465 1 4
Ralph R. Riviezzo 19 155 8.16 15 16 21 9.68% 33.55% $224,186 $1,446 $11,799 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
David G. Donk 57 209 3.67 25 29 27 11.96% 38.76% $1,249,099 $5,977 $21,914 0 3
Ralph R. Riviezzo 29 148 5.1 5 10 15 3.38% 20.27% $102,199 $691 $3,524 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
David G. Donk 46 210 4.57 20 16 25 9.52% 29.05% $914,106 $4,353 $19,872 0 1
Ralph R. Riviezzo 28 137 4.89 8 10 11 5.84% 21.17% $114,085 $833 $4,074 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
David G. Donk 46 291 6.33 25 30 56 8.59% 38.14% $1,230,912 $4,230 $26,759 0 3
Ralph R. Riviezzo 40 229 5.73 19 23 22 8.3% 27.95% $225,500 $985 $5,638 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
David G. Donk 60 270 4.5 29 25 48 10.74% 37.78% $1,034,471 $3,831 $17,241 0 0
Ralph R. Riviezzo 57 225 3.95 23 29 20 10.22% 32% $257,458 $1,144 $4,517 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
David G. Donk 60 259 4.32 28 31 43 10.81% 39.38% $1,088,565 $4,203 $18,143 0 0
Ralph R. Riviezzo 26 122 4.69 12 12 21 9.84% 36.89% $141,616 $1,161 $5,447 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
David G. Donk 45 190 4.22 21 26 28 11.05% 39.47% $1,052,235 $5,538 $23,383 2 3
Ralph R. Riviezzo 50 209 4.18 15 18 23 7.18% 26.79% $224,262 $1,073 $4,485 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
David G. Donk 38 161 4.24 24 33 26 14.91% 51.55% $1,164,631 $7,234 $30,648 1 3
Ralph R. Riviezzo 40 212 5.3 19 24 25 8.96% 32.08% $270,669 $1,277 $6,767 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
David G. Donk 39 164 4.21 20 27 26 12.2% 44.51% $898,526 $5,479 $23,039 0 2
Ralph R. Riviezzo 47 245 5.21 21 25 26 8.57% 29.39% $230,343 $940 $4,901 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
David G. Donk 45 225 5 31 36 28 13.78% 42.22% $1,492,647 $6,634 $33,170 3 4
Ralph R. Riviezzo 42 231 5.5 25 19 19 10.82% 27.27% $299,777 $1,298 $7,138 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
David G. Donk 36 175 4.86 21 22 22 12% 37.14% $1,324,674 $7,570 $36,797 1 1
Ralph R. Riviezzo 41 246 6 36 27 36 14.63% 40.24% $301,724 $1,227 $7,359 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
David G. Donk 38 201 5.29 41 24 21 20.4% 42.79% $2,433,462 $12,107 $64,038 3 8
Ralph R. Riviezzo 45 291 6.47 34 42 30 11.68% 36.43% $375,533 $1,290 $8,345 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
David G. Donk 28 149 5.32 21 19 16 14.09% 37.58% $1,745,574 $11,715 $62,342 3 3
Ralph R. Riviezzo 41 234 5.71 27 39 29 11.54% 40.6% $282,858 $1,209 $6,899 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
David G. Donk 19 109 5.74 19 14 17 17.43% 45.87% $787,361 $7,223 $41,440 5 6
Ralph R. Riviezzo 28 133 4.75 16 21 26 12.03% 47.37% $147,177 $1,107 $5,256 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
David G. Donk 15 67 4.47 10 7 8 14.93% 37.31% $547,492 $8,172 $36,499 1 3
Ralph R. Riviezzo 16 89 5.56 5 9 7 5.62% 23.6% $34,098 $383 $2,131 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
David G. Donk 14 48 3.43 4 6 10 8.33% 41.67% $235,943 $4,915 $16,853 1 1
Ralph R. Riviezzo 11 99 9 8 12 11 8.08% 31.31% $56,359 $569 $5,124 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
David G. Donk 10 46 4.6 12 1 3 26.09% 34.78% $380,096 $8,263 $38,010 2 3
Ralph R. Riviezzo 14 104 7.43 10 10 14 9.62% 32.69% $46,526 $447 $3,323 0 0