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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
Erin Riefenberg 5 19 3.8 2 2 1 10.53% 26.32% $58,494 $3,079 $11,699 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 52 214 4.12 16 25 26 7.48% 31.31% $1,398,240 $6,534 $26,889 0 0
Erin Riefenberg 1 6 6 2 0 1 33.33% 50% $34,453 $5,742 $34,453 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
Erin Riefenberg 1 2 2 0 0 0 0% 0% $1,000 $500 $1,000 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
David G. Donk 68 298 4.38 30 42 34 10.07% 35.57% $2,354,928 $7,902 $34,631 0 2
Erin Riefenberg 1 1 1 0 0 0 0% 0% $500 $500 $500 0 0