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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 52 214 4.12 16 25 26 7.48% 31.31% $1,398,240 $6,534 $26,889 0 0
Leobardo Rivera 10 52 5.2 14 9 3 26.92% 50% $180,760 $3,476 $18,076 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 68 290 4.26 21 30 33 7.24% 28.97% $1,927,385 $6,646 $28,344 0 2
Leobardo Rivera 19 94 4.95 13 17 10 13.83% 42.55% $273,574 $2,910 $14,399 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
Leobardo Rivera 14 86 6.14 10 9 11 11.63% 34.88% $189,720 $2,206 $13,551 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
Leobardo Rivera 10 52 5.2 5 5 6 9.62% 30.77% $79,739 $1,533 $7,974 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
Leobardo Rivera 14 41 2.93 4 6 7 9.76% 41.46% $91,330 $2,228 $6,524 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 60 286 4.77 34 45 53 11.89% 46.15% $2,435,461 $8,516 $40,591 0 1
Leobardo Rivera 8 32 4 2 1 9 6.25% 37.5% $36,981 $1,156 $4,623 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
Leobardo Rivera 10 37 3.7 3 4 6 8.11% 35.14% $38,562 $1,042 $3,856 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
Leobardo Rivera 15 44 2.93 6 7 1 13.64% 31.82% $76,397 $1,736 $5,093 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
Leobardo Rivera 14 45 3.21 5 5 5 11.11% 33.33% $52,046 $1,157 $3,718 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
Leobardo Rivera 3 5 1.67 0 0 1 0% 20% $2,155 $431 $718 0 0