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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
Mark A. Hennig 29 83 2.86 8 13 7 9.64% 33.73% $548,044 $6,603 $18,898 0 0
Shelton J. Zenon, Sr. 29 80 2.76 3 8 9 3.75% 25% $89,655 $1,121 $3,092 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
Mark A. Hennig 49 222 4.53 20 21 27 9.01% 30.63% $1,625,313 $7,321 $33,170 1 2
Shelton J. Zenon, Sr. 35 175 5 11 15 13 6.29% 22.29% $195,690 $1,118 $5,591 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
Mark A. Hennig 60 210 3.5 16 25 26 7.62% 31.9% $1,744,233 $8,306 $29,071 1 2
Shelton J. Zenon, Sr. 46 221 4.8 13 22 24 5.88% 26.7% $265,295 $1,200 $5,767 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
Mark A. Hennig 57 226 3.96 28 21 45 12.39% 41.59% $1,835,820 $8,123 $32,207 0 0
Shelton J. Zenon, Sr. 44 241 5.48 20 25 24 8.3% 28.63% $406,655 $1,687 $9,242 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
Mark A. Hennig 59 233 3.95 20 24 29 8.58% 31.33% $1,419,200 $6,091 $24,054 0 0
Shelton J. Zenon, Sr. 47 249 5.3 15 36 34 6.02% 34.14% $328,771 $1,320 $6,995 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
Mark A. Hennig 58 214 3.69 22 26 28 10.28% 35.51% $1,398,668 $6,536 $24,115 0 1
Shelton J. Zenon, Sr. 36 159 4.42 6 14 20 3.77% 25.16% $177,140 $1,114 $4,921 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
Mark A. Hennig 66 185 2.8 20 22 19 10.81% 32.97% $1,196,582 $6,468 $18,130 0 1
Shelton J. Zenon, Sr. 46 190 4.13 12 14 20 6.32% 24.21% $232,870 $1,226 $5,062 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
Mark A. Hennig 75 267 3.56 31 37 31 11.61% 37.08% $2,454,341 $9,192 $32,725 0 2
Shelton J. Zenon, Sr. 44 209 4.75 13 21 23 6.22% 27.27% $299,715 $1,434 $6,812 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
Mark A. Hennig 55 235 4.27 32 30 43 13.62% 44.68% $2,542,163 $10,818 $46,221 2 3
Shelton J. Zenon, Sr. 49 166 3.39 17 14 22 10.24% 31.93% $298,795 $1,800 $6,098 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
Mark A. Hennig 49 199 4.06 22 27 27 11.06% 38.19% $1,510,357 $7,590 $30,824 1 1
Shelton J. Zenon, Sr. 40 143 3.58 10 10 20 6.99% 27.97% $162,040 $1,133 $4,051 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
Mark A. Hennig 56 194 3.46 25 28 19 12.89% 37.11% $1,596,841 $8,231 $28,515 2 2
Shelton J. Zenon, Sr. 51 222 4.35 9 17 23 4.05% 22.07% $264,669 $1,192 $5,190 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
Mark A. Hennig 61 233 3.82 25 26 38 10.73% 38.2% $1,434,219 $6,155 $23,512 2 3
Shelton J. Zenon, Sr. 39 143 3.67 10 12 13 6.99% 24.48% $225,313 $1,576 $5,777 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
Mark A. Hennig 54 217 4.02 31 22 35 14.29% 40.55% $1,801,799 $8,303 $33,367 2 6
Shelton J. Zenon, Sr. 48 160 3.33 7 15 25 4.38% 29.38% $171,515 $1,072 $3,573 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
Mark A. Hennig 63 277 4.4 45 48 35 16.25% 46.21% $2,357,744 $8,512 $37,425 1 5
Shelton J. Zenon, Sr. 24 104 4.33 2 8 9 1.92% 18.27% $71,721 $690 $2,988 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
Mark A. Hennig 67 232 3.46 20 26 29 8.62% 32.33% $1,087,964 $4,690 $16,238 0 2
Shelton J. Zenon, Sr. 15 66 4.4 1 1 4 1.52% 9.09% $40,704 $617 $2,714 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
Mark A. Hennig 57 276 4.84 36 53 36 13.04% 45.29% $1,474,622 $5,343 $25,871 0 2
Shelton J. Zenon, Sr. 19 58 3.05 1 0 3 1.72% 6.9% $17,103 $295 $900 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
Mark A. Hennig 71 328 4.62 30 43 50 9.15% 37.5% $1,320,692 $4,027 $18,601 0 1
Shelton J. Zenon, Sr. 22 92 4.18 5 3 10 5.43% 19.57% $62,759 $682 $2,853 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
Mark A. Hennig 89 424 4.76 52 50 42 12.26% 33.96% $2,123,132 $5,007 $23,855 2 6
Shelton J. Zenon, Sr. 19 51 2.68 0 3 1 0% 7.84% $19,223 $377 $1,012 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
Mark A. Hennig 102 463 4.54 64 80 71 13.82% 46.44% $3,386,804 $7,315 $33,204 3 6
Shelton J. Zenon, Sr. 3 3 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
Mark A. Hennig 112 478 4.27 79 71 57 16.53% 43.31% $5,814,441 $12,164 $51,915 16 26
Shelton J. Zenon, Sr. 15 72 4.8 8 1 8 11.11% 23.61% $60,669 $843 $4,045 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
Mark A. Hennig 116 495 4.27 85 77 70 17.17% 46.87% $4,973,124 $10,047 $42,872 14 22
Shelton J. Zenon, Sr. 17 119 7 6 11 13 5.04% 25.21% $57,690 $485 $3,394 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
Mark A. Hennig 98 447 4.56 71 63 49 15.88% 40.94% $3,932,254 $8,797 $40,125 7 12
Shelton J. Zenon, Sr. 17 127 7.47 6 13 15 4.72% 26.77% $62,135 $489 $3,655 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
Mark A. Hennig 104 491 4.72 73 60 69 14.87% 41.14% $3,042,651 $6,197 $29,256 4 8
Shelton J. Zenon, Sr. 10 94 9.4 6 14 12 6.38% 34.04% $47,809 $509 $4,781 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 $22,031
Mark A. Hennig 98 416 4.24 63 58 60 15.14% 43.51% $3,732,529 $8,972 $38,087 9 12
Shelton J. Zenon, Sr. 15 86 5.73 3 4 5 3.49% 13.95% $26,489 $308 $1,766 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
Mark A. Hennig 91 432 4.75 73 68 53 16.9% 44.91% $2,877,532 $6,661 $31,621 4 12
Shelton J. Zenon, Sr. 11 46 4.18 2 2 7 4.35% 23.91% $12,905 $281 $1,173 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
Mark A. Hennig 81 428 5.28 72 74 54 16.82% 46.73% $2,617,748 $6,116 $32,318 1 3
Shelton J. Zenon, Sr. 7 42 6 1 7 4 2.38% 28.57% $12,799 $305 $1,828 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
Mark A. Hennig 64 325 5.08 56 53 49 17.23% 48.62% $2,464,677 $7,584 $38,511 5 12
Shelton J. Zenon, Sr. 3 22 7.33 3 2 2 13.64% 31.82% $10,011 $455 $3,337 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
Mark A. Hennig 57 223 3.91 36 35 25 16.14% 43.05% $1,939,950 $8,699 $34,034 6 11
Shelton J. Zenon, Sr. 4 21 5.25 1 3 7 4.76% 52.38% $4,469 $213 $1,117 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
Mark A. Hennig 37 229 6.19 49 43 26 21.4% 51.53% $3,986,802 $17,410 $107,751 10 19
Shelton J. Zenon, Sr. 3 13 4.33 1 1 3 7.69% 38.46% $2,035 $157 $678 0 0