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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. 3.31 13.64% 40.9% $5,415 $17,925
Robert R. O'Connor II 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
Mark E. Casse 325 955 2.94 151 163 122 15.81% 45.65% $15,180,319 $15,896 $46,709 16 32

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. 3.31 13.64% 40.9% $5,415 $17,925
Robert R. O'Connor II 8 15 1.88 1 2 0 6.67% 20% $23,117 $1,541 $2,890 0 0
Mark E. Casse 363 1284 3.54 231 165 177 17.99% 44.63% $17,725,580 $13,805 $48,831 22 52

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. 3.31 13.64% 40.9% $5,415 $17,925
Robert R. O'Connor II 14 44 3.14 2 3 4 4.55% 20.45% $154,133 $3,503 $11,010 0 0
Mark E. Casse 325 1250 3.85 206 206 176 16.48% 47.04% $16,874,334 $13,499 $51,921 15 37

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. 3.31 13.64% 40.9% $5,415 $17,925
Robert R. O'Connor II 12 68 5.67 9 8 10 13.24% 39.71% $252,181 $3,709 $21,015 0 0
Mark E. Casse 386 1402 3.63 210 202 165 14.98% 41.16% $15,503,020 $11,058 $40,163 16 36

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. 3.31 13.64% 40.9% $5,415 $17,925
Robert R. O'Connor II 14 65 4.64 10 9 7 15.38% 40% $256,710 $3,949 $18,336 0 1
Mark E. Casse 363 1347 3.71 225 189 161 16.7% 42.69% $14,881,212 $11,048 $40,995 21 43

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. 3.31 13.64% 40.9% $5,415 $17,925
Robert R. O'Connor II 15 54 3.6 2 7 15 3.7% 44.44% $94,760 $1,755 $6,317 0 0
Mark E. Casse 351 1185 3.38 183 179 138 15.44% 42.19% $11,399,112 $9,620 $32,476 14 29

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. 3.31 13.64% 40.9% $5,415 $17,925
Robert R. O'Connor II 13 51 3.92 4 9 9 7.84% 43.14% $146,292 $2,868 $11,253 0 0
Mark E. Casse 320 1189 3.72 200 166 168 16.82% 44.91% $16,264,310 $13,679 $50,826 15 40

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. 3.31 13.64% 40.9% $5,415 $17,925
Robert R. O'Connor II 11 57 5.18 4 6 9 7.02% 33.33% $129,599 $2,274 $11,782 0 0
Mark E. Casse 337 1250 3.71 221 181 172 17.68% 45.92% $14,946,783 $11,957 $44,352 13 43

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. 3.31 13.64% 40.9% $5,415 $17,925
Robert R. O'Connor II 16 59 3.69 6 5 9 10.17% 33.9% $123,910 $2,100 $7,744 0 0
Mark E. Casse 351 1323 3.77 233 208 174 17.61% 46.49% $17,420,200 $13,167 $49,630 26 41

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. 3.31 13.64% 40.9% $5,415 $17,925
Robert R. O'Connor II 16 62 3.88 4 12 7 6.45% 37.1% $150,161 $2,422 $9,385 0 0
Mark E. Casse 368 1334 3.63 235 202 182 17.62% 46.4% $17,946,005 $13,453 $48,766 26 49

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. 3.31 13.64% 40.9% $5,415 $17,925
Robert R. O'Connor II 15 55 3.67 7 11 8 12.73% 47.27% $203,849 $3,706 $13,590 0 0
Mark E. Casse 265 896 3.38 159 149 127 17.75% 48.55% $13,697,149 $15,287 $51,687 17 31

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. 3.31 13.64% 40.9% $5,415 $17,925
Robert R. O'Connor II 14 70 5 8 11 9 11.43% 40% $128,400 $1,834 $9,171 0 0
Mark E. Casse 233 858 3.68 155 144 124 18.07% 49.3% $11,879,496 $13,846 $50,985 16 31

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. 3.31 13.64% 40.9% $5,415 $17,925
Robert R. O'Connor II 22 89 4.05 9 9 17 10.11% 39.33% $134,051 $1,506 $6,093 0 0
Mark E. Casse 197 679 3.45 128 96 78 18.85% 44.48% $8,565,108 $12,614 $43,478 9 25

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. 3.31 13.64% 40.9% $5,415 $17,925
Robert R. O'Connor II 18 85 4.72 11 19 12 12.94% 49.41% $148,549 $1,748 $8,253 0 0
Mark E. Casse 178 675 3.79 129 114 102 19.11% 51.11% $10,238,086 $15,168 $57,517 14 31

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. 3.31 13.64% 40.9% $5,415 $17,925
Robert R. O'Connor II 26 75 2.88 10 13 7 13.33% 40% $178,516 $2,380 $6,866 0 0
Mark E. Casse 176 670 3.81 140 91 90 20.9% 47.91% $7,825,205 $11,679 $44,461 3 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. 3.31 13.64% 40.9% $5,415 $17,925
Robert R. O'Connor II 27 111 4.11 21 25 13 18.92% 53.15% $306,700 $2,763 $11,359 0 0
Mark E. Casse 197 643 3.26 93 85 81 14.46% 40.28% $5,154,687 $8,017 $26,166 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. 3.31 13.64% 40.9% $5,415 $17,925
Robert R. O'Connor II 24 104 4.33 10 19 12 9.62% 39.42% $233,762 $2,248 $9,740 0 0
Mark E. Casse 184 604 3.28 84 82 88 13.91% 42.05% $5,203,757 $8,615 $28,281 3 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. 3.31 13.64% 40.9% $5,415 $17,925
Robert R. O'Connor II 19 88 4.63 22 14 11 25% 53.41% $244,404 $2,777 $12,863 0 0
Mark E. Casse 175 630 3.6 96 89 77 15.24% 41.59% $6,682,521 $10,607 $38,186 3 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. 3.31 13.64% 40.9% $5,415 $17,925
Robert R. O'Connor II 14 70 5 5 12 12 7.14% 41.43% $89,164 $1,274 $6,369 0 0
Mark E. Casse 128 414 3.23 92 80 48 22.22% 53.14% $6,333,041 $15,297 $49,477 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. 3.31 13.64% 40.9% $5,415 $17,925
Robert R. O'Connor II 17 84 4.94 8 8 5 9.52% 25% $87,942 $1,047 $5,173 0 0
Mark E. Casse 127 375 2.95 69 54 48 18.4% 45.6% $4,406,418 $11,750 $34,696 4 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. 3.31 13.64% 40.9% $5,415 $17,925
Robert R. O'Connor II 14 55 3.93 4 6 5 7.27% 27.27% $70,096 $1,274 $5,007 0 0
Mark E. Casse 97 306 3.15 57 43 33 18.63% 43.46% $2,538,926 $8,297 $26,174 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. 3.31 13.64% 40.9% $5,415 $17,925
Robert R. O'Connor II 15 46 3.07 5 3 7 10.87% 32.61% $93,466 $2,032 $6,231 0 0
Mark E. Casse 110 323 2.94 48 45 46 14.86% 43.03% $2,946,340 $9,122 $26,785 1 6

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. 3.31 13.64% 40.9% $5,415 $17,925
Robert R. O'Connor II 13 52 4 7 5 5 13.46% 32.69% $121,585 $2,338 $9,353 0 0
Mark E. Casse 152 465 3.06 59 61 68 12.69% 40.43% $3,466,964 $7,456 $22,809 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. 3.31 13.64% 40.9% $5,415 $17,925
Robert R. O'Connor II 10 42 4.2 3 7 6 7.14% 38.1% $76,312 $1,817 $7,631 0 0
Mark E. Casse 150 514 3.43 76 80 56 14.79% 41.25% $4,055,134 $7,889 $27,034 1 6

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. 3.31 13.64% 40.9% $5,415 $17,925
Robert R. O'Connor II 19 105 5.53 14 18 12 13.33% 41.9% $364,633 $3,473 $19,191 0 1
Mark E. Casse 171 592 3.46 76 93 96 12.84% 44.76% $4,005,773 $6,767 $23,426 3 6

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. 3.31 13.64% 40.9% $5,415 $17,925
Robert R. O'Connor II 14 75 5.36 9 10 5 12% 32% $194,958 $2,599 $13,926 0 0
Mark E. Casse 89 255 2.87 39 47 41 15.29% 49.8% $1,950,595 $7,649 $21,917 1 7

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. 3.31 13.64% 40.9% $5,415 $17,925
Robert R. O'Connor II 22 110 5 14 7 12 12.73% 30% $333,688 $3,034 $15,168 0 1
Mark E. Casse 48 176 3.67 42 26 35 23.86% 58.52% $1,337,387 $7,599 $27,862 1 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. 3.31 13.64% 40.9% $5,415 $17,925
Robert R. O'Connor II 29 146 5.03 19 15 15 13.01% 33.56% $381,591 $2,614 $13,158 0 1
Mark E. Casse 31 116 3.74 24 30 13 20.69% 57.76% $584,378 $5,038 $18,851 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. 3.31 13.64% 40.9% $5,415 $17,925
Robert R. O'Connor II 23 136 5.91 18 18 15 13.24% 37.5% $401,086 $2,949 $17,439 0 1
Mark E. Casse 3 3 1 1 0 1 33.33% 66.67% $15,840 $5,280 $5,280 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. 3.31 13.64% 40.9% $5,415 $17,925
Robert R. O'Connor II 27 132 4.89 14 13 12 10.61% 29.55% $243,413 $1,844 $9,015 0 0
Mark E. Casse 8 17 2.13 1 3 1 5.88% 29.41% $81,476 $4,793 $10,185 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. 3.31 13.64% 40.9% $5,415 $17,925
Robert R. O'Connor II 21 131 6.24 17 20 17 12.98% 41.22% $375,040 $2,863 $17,859 0 1
Mark E. Casse 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. 3.31 13.64% 40.9% $5,415 $17,925
Robert R. O'Connor II 14 100 7.14 16 14 19 16% 49% $260,253 $2,603 $18,590 0 0
Mark E. Casse 4 6 1.5 1 1 0 16.67% 33.33% $109,145 $18,191 $27,286 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. 3.31 13.64% 40.9% $5,415 $17,925
Robert R. O'Connor II 21 137 6.52 14 15 21 10.22% 36.5% $200,368 $1,463 $9,541 0 0
Mark E. Casse 3 4 1.33 0 0 0 0% 0% $250 $63 $83 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. 3.31 13.64% 40.9% $5,415 $17,925
Robert R. O'Connor II 32 152 4.75 20 13 14 13.16% 30.92% $163,005 $1,072 $5,094 0 0
Mark E. Casse 6 9 1.5 1 0 1 11.11% 22.22% $32,180 $3,576 $5,363 0 1