Skip to:

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 $22,028
Michael R. Thompson 1 1 1 0 0 0 0% 0% $395 $395 $395 0 0
Donnie K. Von Hemel 4 4 1 0 0 1 0% 25% $16,713 $4,178 $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 $22,028
Michael R. Thompson 3 18 6 2 4 1 11.11% 38.89% $63,358 $3,520 $21,119 0 0
Donnie K. Von Hemel 31 110 3.55 10 13 15 9.09% 34.55% $706,216 $6,420 $22,781 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 $22,028
Michael R. Thompson 2 10 5 1 0 0 10% 10% $40,782 $4,078 $20,391 0 0
Donnie K. Von Hemel 32 130 4.06 9 21 15 6.92% 34.62% $1,168,936 $8,992 $36,529 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 $22,028
Michael R. Thompson 1 6 6 2 0 1 33.33% 50% $79,066 $13,178 $79,066 0 0
Donnie K. Von Hemel 39 122 3.13 17 22 21 13.93% 49.18% $1,019,281 $8,355 $26,135 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 $22,028
Michael R. Thompson 1 2 2 1 0 0 50% 50% $8,121 $4,061 $8,121 0 0
Donnie K. Von Hemel 36 100 2.78 10 13 9 10% 32% $821,520 $8,215 $22,820 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 $22,028
Michael R. Thompson 1 8 8 0 0 3 0% 37.5% $7,540 $943 $7,540 0 0
Donnie K. Von Hemel 46 169 3.67 11 27 18 6.51% 33.14% $717,511 $4,246 $15,598 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 $22,028
Michael R. Thompson 1 5 5 0 0 0 0% 0% $3,160 $632 $3,160 0 0
Donnie K. Von Hemel 63 216 3.43 28 24 30 12.96% 37.96% $1,008,185 $4,668 $16,003 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 $22,028
Michael R. Thompson 2 4 2 0 1 0 0% 25% $6,370 $1,593 $3,185 0 0
Donnie K. Von Hemel 53 191 3.6 26 24 29 13.61% 41.36% $1,075,015 $5,628 $20,283 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 $22,028
Michael R. Thompson 1 2 2 0 0 0 0% 0% $1,140 $570 $1,140 0 0
Donnie K. Von Hemel 57 221 3.88 21 33 36 9.5% 40.72% $1,496,305 $6,771 $26,251 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 $22,028
Michael R. Thompson 2 7 3.5 0 0 1 0% 14.29% $3,878 $554 $1,939 0 0
Donnie K. Von Hemel 75 243 3.24 30 36 20 12.35% 35.39% $1,413,268 $5,816 $18,844 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 $22,028
Michael R. Thompson 1 6 6 1 1 0 16.67% 33.33% $17,215 $2,869 $17,215 0 0
Donnie K. Von Hemel 90 340 3.78 46 51 50 13.53% 43.24% $2,619,431 $7,704 $29,105 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 $22,028
Michael R. Thompson 1 6 6 0 3 1 0% 66.67% $16,407 $2,735 $16,407 0 0
Donnie K. Von Hemel 79 354 4.48 50 54 56 14.12% 45.2% $2,659,239 $7,512 $33,661 1 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 $22,028
Michael R. Thompson 1 6 6 1 1 1 16.67% 50% $16,285 $2,714 $16,285 0 0
Donnie K. Von Hemel 73 280 3.84 39 38 39 13.93% 41.43% $1,550,789 $5,539 $21,244 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 $22,028
Michael R. Thompson 4 19 4.75 0 2 2 0% 21.05% $18,428 $970 $4,607 0 0
Donnie K. Von Hemel 83 367 4.42 60 62 42 16.35% 44.69% $2,428,288 $6,617 $29,256 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 $22,028
Michael R. Thompson 8 30 3.75 5 2 3 16.67% 33.33% $103,751 $3,458 $12,969 0 0
Donnie K. Von Hemel 80 307 3.84 53 41 38 17.26% 43% $2,802,315 $9,128 $35,029 4 15

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 $22,028
Michael R. Thompson 13 69 5.31 4 9 7 5.8% 28.99% $143,451 $2,079 $11,035 0 0
Donnie K. Von Hemel 86 312 3.63 53 42 38 16.99% 42.63% $2,820,675 $9,041 $32,799 5 10

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 $22,028
Michael R. Thompson 10 67 6.7 8 8 8 11.94% 35.82% $208,971 $3,119 $20,897 0 0
Donnie K. Von Hemel 92 341 3.71 57 43 46 16.72% 42.82% $1,653,766 $4,850 $17,976 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 $22,028
Michael R. Thompson 12 74 6.17 6 5 10 8.11% 28.38% $139,031 $1,879 $11,586 0 0
Donnie K. Von Hemel 86 379 4.41 55 57 61 14.51% 45.65% $2,144,361 $5,658 $24,934 2 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 $22,028
Michael R. Thompson 11 65 5.91 6 13 8 9.23% 41.54% $176,970 $2,723 $16,088 0 0
Donnie K. Von Hemel 88 393 4.47 69 70 57 17.56% 49.87% $2,333,227 $5,937 $26,514 1 10

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 $22,028
Michael R. Thompson 9 48 5.33 6 3 6 12.5% 31.25% $102,589 $2,137 $11,399 0 0
Donnie K. Von Hemel 97 429 4.42 70 62 82 16.32% 49.88% $2,789,448 $6,502 $28,757 1 13

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 $22,028
Michael R. Thompson 8 50 6.25 8 1 5 16% 28% $118,123 $2,362 $14,765 0 0
Donnie K. Von Hemel 95 422 4.44 76 68 73 18.01% 51.42% $2,340,561 $5,546 $24,637 0 15

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 $22,028
Michael R. Thompson 14 78 5.57 7 11 11 8.97% 37.18% $101,295 $1,299 $7,235 0 0
Donnie K. Von Hemel 94 408 4.34 68 69 65 16.67% 49.51% $1,816,265 $4,452 $19,322 0 11

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 $22,028
Michael R. Thompson 15 65 4.33 9 6 4 13.85% 29.23% $91,018 $1,400 $6,068 0 0
Donnie K. Von Hemel 118 479 4.06 91 84 77 19% 52.61% $2,285,398 $4,771 $19,368 2 11

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 $22,028
Michael R. Thompson 13 86 6.62 12 10 12 13.95% 39.53% $168,095 $1,955 $12,930 0 0
Donnie K. Von Hemel 95 416 4.38 94 81 59 22.6% 56.25% $2,576,588 $6,194 $27,122 2 13

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 $22,028
Michael R. Thompson 12 69 5.75 8 5 12 11.59% 36.23% $111,969 $1,623 $9,331 0 0
Donnie K. Von Hemel 77 339 4.4 91 42 45 26.84% 52.51% $2,245,045 $6,623 $29,156 5 19

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 $22,028
Michael R. Thompson 7 34 4.86 3 6 2 8.82% 32.35% $76,412 $2,247 $10,916 0 0
Donnie K. Von Hemel 66 302 4.58 69 47 41 22.85% 51.99% $1,876,880 $6,215 $28,438 2 13

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 $22,028
Michael R. Thompson 8 53 6.63 3 9 14 5.66% 49.06% $100,203 $1,891 $12,525 0 0
Donnie K. Von Hemel 77 312 4.05 53 47 43 16.99% 45.83% $1,333,826 $4,275 $17,322 1 11

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 $22,028
Michael R. Thompson 10 39 3.9 7 4 2 17.95% 33.33% $55,907 $1,434 $5,591 0 0
Donnie K. Von Hemel 86 342 3.98 81 52 45 23.68% 52.05% $1,856,653 $5,429 $21,589 0 11

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 $22,028
Michael R. Thompson 6 39 6.5 5 3 5 12.82% 33.33% $47,832 $1,226 $7,972 0 0
Donnie K. Von Hemel 78 286 3.67 65 47 42 22.73% 53.85% $1,784,609 $6,240 $22,880 0 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 $22,028
Michael R. Thompson 15 43 2.87 4 3 5 9.3% 27.91% $50,902 $1,184 $3,393 0 0
Donnie K. Von Hemel 78 336 4.31 61 55 58 18.15% 51.79% $1,345,451 $4,004 $17,249 0 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 $22,028
Michael R. Thompson 5 27 5.4 2 4 2 7.41% 29.63% $26,529 $983 $5,306 0 0
Donnie K. Von Hemel 94 341 3.63 70 69 40 20.53% 52.49% $1,108,116 $3,250 $11,788 1 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 $22,028
Michael R. Thompson 5 33 6.6 5 7 4 15.15% 48.48% $91,079 $2,760 $18,216 0 0
Donnie K. Von Hemel 91 404 4.44 83 62 74 20.54% 54.21% $1,647,073 $4,077 $18,100 2 14

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 $22,028
Michael R. Thompson 5 20 4 3 2 5 15% 50% $15,197 $760 $3,039 0 0
Donnie K. Von Hemel 97 405 4.18 105 70 67 25.93% 59.75% $1,884,837 $4,654 $19,431 4 16

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 $22,028
Michael R. Thompson 18 128 7.11 20 15 11 15.63% 35.94% $272,283 $2,127 $15,127 0 1
Donnie K. Von Hemel 86 410 4.77 76 64 60 18.54% 48.78% $1,115,026 $2,720 $12,965 1 10

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 $22,028
Michael R. Thompson 16 85 5.31 15 17 14 17.65% 54.12% $255,953 $3,011 $15,997 0 0
Donnie K. Von Hemel 89 404 4.54 94 70 45 23.27% 51.73% $1,406,981 $3,483 $15,809 1 15

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 $22,028
Michael R. Thompson 5 38 7.6 4 8 3 10.53% 39.47% $35,693 $939 $7,139 0 0
Donnie K. Von Hemel 83 401 4.83 72 66 47 17.96% 46.13% $1,269,417 $3,166 $15,294 1 6