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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
Michael E. Biehler 9 26 2.89 7 4 6 26.92% 65.38% $156,602 $6,023 $17,400 0 0
Jeff W. Zook 4 4 1 0 0 0 0% 0% $540 $135 $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 $22,031
Michael E. Biehler 39 154 3.95 20 16 29 12.99% 42.21% $473,457 $3,074 $12,140 0 0
Jeff W. Zook 10 44 4.4 8 7 4 18.18% 43.18% $93,430 $2,123 $9,343 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
Michael E. Biehler 45 188 4.18 28 32 19 14.89% 42.02% $657,876 $3,499 $14,619 0 1
Jeff W. Zook 16 74 4.63 8 8 9 10.81% 33.78% $121,042 $1,636 $7,565 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
Michael E. Biehler 46 196 4.26 43 28 19 21.94% 45.92% $927,016 $4,730 $20,153 0 2
Jeff W. Zook 24 94 3.92 12 8 15 12.77% 37.23% $266,828 $2,839 $11,118 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
Michael E. Biehler 52 220 4.23 30 23 31 13.64% 38.18% $582,529 $2,648 $11,202 0 0
Jeff W. Zook 18 66 3.67 3 16 8 4.55% 40.91% $89,683 $1,359 $4,982 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
Michael E. Biehler 45 178 3.96 26 22 25 14.61% 41.01% $566,726 $3,184 $12,594 0 0
Jeff W. Zook 9 23 2.56 0 0 1 0% 4.35% $8,604 $374 $956 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
Michael E. Biehler 31 150 4.84 24 19 26 16% 46% $531,888 $3,546 $17,158 0 0
Jeff W. Zook 15 46 3.07 1 5 5 2.17% 23.91% $38,422 $835 $2,561 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
Michael E. Biehler 35 162 4.63 29 28 19 17.9% 46.91% $757,968 $4,679 $21,656 0 0
Jeff W. Zook 13 54 4.15 7 4 5 12.96% 29.63% $96,434 $1,786 $7,418 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
Michael E. Biehler 29 124 4.28 14 13 13 11.29% 32.26% $290,307 $2,341 $10,011 0 0
Jeff W. Zook 13 45 3.46 6 3 4 13.33% 28.89% $77,094 $1,713 $5,930 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
Michael E. Biehler 41 215 5.24 29 31 32 13.49% 42.79% $587,388 $2,732 $14,327 0 2
Jeff W. Zook 11 41 3.73 2 5 6 4.88% 31.71% $47,670 $1,163 $4,334 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
Michael E. Biehler 43 203 4.72 31 22 22 15.27% 36.95% $703,737 $3,467 $16,366 0 0
Jeff W. Zook 10 34 3.4 5 2 3 14.71% 29.41% $53,365 $1,570 $5,337 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
Michael E. Biehler 60 282 4.7 40 47 28 14.18% 40.78% $1,082,490 $3,839 $18,042 0 2
Jeff W. Zook 11 45 4.09 3 9 7 6.67% 42.22% $60,261 $1,339 $5,478 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
Michael E. Biehler 59 257 4.36 40 39 31 15.56% 42.8% $957,138 $3,724 $16,223 0 0
Jeff W. Zook 14 44 3.14 1 1 9 2.27% 25% $34,111 $775 $2,437 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
Michael E. Biehler 71 324 4.56 46 33 48 14.2% 39.2% $937,163 $2,892 $13,199 0 0
Jeff W. Zook 19 64 3.37 2 5 1 3.13% 12.5% $64,537 $1,008 $3,397 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
Michael E. Biehler 56 251 4.48 49 28 37 19.52% 45.42% $815,410 $3,249 $14,561 0 1
Jeff W. Zook 32 81 2.53 2 5 10 2.47% 20.99% $51,723 $639 $1,616 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
Michael E. Biehler 59 293 4.97 50 42 44 17.06% 46.42% $768,606 $2,623 $13,027 0 1
Jeff W. Zook 26 90 3.46 5 11 13 5.56% 32.22% $108,394 $1,204 $4,169 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
Michael E. Biehler 49 226 4.61 42 32 28 18.58% 45.13% $782,635 $3,463 $15,972 0 3
Jeff W. Zook 20 63 3.15 3 6 5 4.76% 22.22% $55,083 $874 $2,754 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
Michael E. Biehler 36 162 4.5 23 21 25 14.2% 42.59% $425,612 $2,627 $11,823 0 2
Jeff W. Zook 16 31 1.94 0 2 0 0% 6.45% $12,604 $407 $788 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
Michael E. Biehler 41 185 4.51 31 30 12 16.76% 39.46% $473,221 $2,558 $11,542 0 0
Jeff W. Zook 6 7 1.17 0 0 2 0% 28.57% $4,513 $645 $752 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
Michael E. Biehler 52 229 4.4 29 34 38 12.66% 44.1% $478,246 $2,088 $9,197 0 0
Jeff W. Zook 4 8 2 1 0 0 12.5% 12.5% $16,022 $2,003 $4,006 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
Michael E. Biehler 42 213 5.07 39 22 27 18.31% 41.31% $583,542 $2,740 $13,894 0 5
Jeff W. Zook 2 3 1.5 0 0 1 0% 33.33% $864 $288 $432 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
Michael E. Biehler 41 191 4.66 36 33 32 18.85% 52.88% $742,635 $3,888 $18,113 1 6
Jeff W. Zook 1 1 1 0 0 0 0% 0% $64 $64 $64 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
Michael E. Biehler 39 177 4.54 22 17 29 12.43% 38.42% $286,496 $1,619 $7,346 0 0
Jeff W. Zook 1 1 1 0 0 0 0% 0% $0 $0 $0 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
Michael E. Biehler 30 159 5.3 17 20 15 10.69% 32.7% $214,220 $1,347 $7,141 0 3
Jeff W. Zook 1 4 4 0 0 0 0% 0% $124 $31 $124 0 0