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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
Gerald W. Butler 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
Brian J. Koriner 23 52 2.26 8 9 10 15.38% 51.92% $453,612 $8,723 $19,722 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 $22,031
Gerald W. Butler 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
Brian J. Koriner 32 99 3.09 14 17 13 14.14% 44.44% $816,510 $8,248 $25,516 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
Gerald W. Butler 19 83 4.37 20 12 11 24.1% 51.81% $230,612 $2,778 $12,137 0 0
Brian J. Koriner 42 138 3.29 18 24 12 13.04% 39.13% $1,002,298 $7,263 $23,864 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
Gerald W. Butler 19 116 6.11 29 20 13 25% 53.45% $326,920 $2,818 $17,206 0 0
Brian J. Koriner 50 145 2.9 19 21 21 13.1% 42.07% $1,140,460 $7,865 $22,809 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 $22,031
Gerald W. Butler 14 79 5.64 13 16 6 16.46% 44.3% $174,304 $2,206 $12,450 0 0
Brian J. Koriner 59 205 3.47 29 32 29 14.15% 43.9% $1,906,632 $9,301 $32,316 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
Gerald W. Butler 10 42 4.2 5 9 5 11.9% 45.24% $68,195 $1,624 $6,820 0 0
Brian J. Koriner 57 179 3.14 25 22 33 13.97% 44.69% $1,459,680 $8,155 $25,608 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 $22,031
Gerald W. Butler 11 59 5.36 13 14 8 22.03% 59.32% $116,609 $1,976 $10,601 0 0
Brian J. Koriner 50 160 3.2 18 16 22 11.25% 35% $988,602 $6,179 $19,772 1 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 $22,031
Gerald W. Butler 14 84 6 23 16 9 27.38% 57.14% $194,406 $2,314 $13,886 0 0
Brian J. Koriner 61 177 2.9 26 28 28 14.69% 46.33% $1,240,642 $7,009 $20,338 1 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 $22,031
Gerald W. Butler 11 73 6.64 15 11 9 20.55% 47.95% $127,306 $1,744 $11,573 0 0
Brian J. Koriner 54 187 3.46 41 25 25 21.93% 48.66% $2,078,688 $11,116 $38,494 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. 4 13.53% 40.55% $5,513 $22,031
Gerald W. Butler 12 57 4.75 15 6 9 26.32% 52.63% $88,731 $1,557 $7,394 0 0
Brian J. Koriner 44 139 3.16 19 23 16 13.67% 41.73% $898,005 $6,460 $20,409 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 $22,031
Gerald W. Butler 6 48 8 7 9 6 14.58% 45.83% $61,897 $1,290 $10,316 0 0
Brian J. Koriner 34 130 3.82 21 25 18 16.15% 49.23% $867,224 $6,671 $25,507 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
Gerald W. Butler 10 59 5.9 14 10 7 23.73% 52.54% $105,217 $1,783 $10,522 0 0
Brian J. Koriner 24 82 3.42 10 14 7 12.2% 37.8% $422,895 $5,157 $17,621 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 $22,031
Gerald W. Butler 11 82 7.45 16 8 18 19.51% 51.22% $97,362 $1,187 $8,851 0 0
Brian J. Koriner 27 88 3.26 19 16 9 21.59% 50% $532,070 $6,046 $19,706 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 $22,031
Gerald W. Butler 17 127 7.47 12 23 16 9.45% 40.16% $108,373 $853 $6,375 0 0
Brian J. Koriner 26 80 3.08 9 8 12 11.25% 36.25% $338,128 $4,227 $13,005 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
Gerald W. Butler 28 119 4.25 16 17 10 13.45% 36.13% $134,992 $1,134 $4,821 0 0
Brian J. Koriner 48 128 2.67 13 14 17 10.16% 34.38% $654,985 $5,117 $13,646 1 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 $22,031
Gerald W. Butler 20 125 6.25 14 25 11 11.2% 40% $110,495 $884 $5,525 0 0
Brian J. Koriner 58 167 2.88 24 21 20 14.37% 38.92% $1,008,551 $6,039 $17,389 1 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 $22,031
Gerald W. Butler 12 87 7.25 16 12 15 18.39% 49.43% $100,086 $1,150 $8,341 0 0
Brian J. Koriner 57 190 3.33 25 35 27 13.16% 45.79% $1,209,185 $6,364 $21,214 2 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 $22,031
Gerald W. Butler 18 98 5.44 6 15 6 6.12% 27.55% $55,688 $568 $3,094 0 0
Brian J. Koriner 78 211 2.71 37 29 24 17.54% 42.65% $1,841,168 $8,726 $23,605 2 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. 4 13.53% 40.55% $5,513 $22,031
Gerald W. Butler 25 103 4.12 20 13 9 19.42% 40.78% $119,157 $1,157 $4,766 0 0
Brian J. Koriner 95 291 3.06 50 47 42 17.18% 47.77% $2,192,627 $7,535 $23,080 3 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 $22,031
Gerald W. Butler 23 117 5.09 23 15 17 19.66% 47.01% $135,045 $1,154 $5,872 0 0
Brian J. Koriner 115 347 3.02 68 53 45 19.6% 47.84% $1,930,228 $5,563 $16,785 1 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 $22,031
Gerald W. Butler 17 107 6.29 26 14 18 24.3% 54.21% $175,754 $1,643 $10,338 0 0
Brian J. Koriner 102 331 3.25 88 64 38 26.59% 57.4% $1,963,955 $5,933 $19,254 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 $22,031
Gerald W. Butler 13 122 9.38 29 25 21 23.77% 61.48% $169,033 $1,386 $13,003 0 0
Brian J. Koriner 94 305 3.24 54 56 42 17.7% 49.84% $1,287,283 $4,221 $13,695 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 $22,031
Gerald W. Butler 22 120 5.45 13 13 15 10.83% 34.17% $89,223 $744 $4,056 0 0
Brian J. Koriner 103 288 2.8 57 38 37 19.79% 45.83% $1,220,298 $4,237 $11,848 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. 4 13.53% 40.55% $5,513 $22,031
Gerald W. Butler 19 98 5.16 12 7 15 12.24% 34.69% $74,567 $761 $3,925 0 0
Brian J. Koriner 90 291 3.23 56 51 41 19.24% 50.86% $930,474 $3,198 $10,339 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 $22,031
Gerald W. Butler 20 130 6.5 7 8 11 5.38% 20% $57,331 $441 $2,867 0 0
Brian J. Koriner 77 274 3.56 41 40 39 14.96% 43.8% $682,604 $2,491 $8,865 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 $22,031
Gerald W. Butler 22 128 5.82 13 16 8 10.16% 28.91% $64,896 $507 $2,950 0 0
Brian J. Koriner 90 340 3.78 66 50 47 19.41% 47.94% $1,400,906 $4,120 $15,566 2 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 $22,031
Gerald W. Butler 13 135 10.38 14 19 13 10.37% 34.07% $75,303 $558 $5,793 0 0
Brian J. Koriner 64 229 3.58 47 37 38 20.52% 53.28% $776,685 $3,392 $12,136 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 $22,031
Gerald W. Butler 15 99 6.6 7 11 14 7.07% 32.32% $36,728 $371 $2,449 0 0
Brian J. Koriner 53 208 3.92 26 48 23 12.5% 46.63% $404,206 $1,943 $7,627 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
Gerald W. Butler 13 107 8.23 11 13 12 10.28% 33.64% $55,279 $517 $4,252 0 0
Brian J. Koriner 58 211 3.64 27 42 27 12.8% 45.5% $346,778 $1,643 $5,979 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
Gerald W. Butler 22 145 6.59 15 19 22 10.34% 38.62% $62,463 $431 $2,839 0 0
Brian J. Koriner 63 227 3.6 50 26 43 22.03% 52.42% $386,059 $1,701 $6,128 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
Gerald W. Butler 20 162 8.1 22 17 14 13.58% 32.72% $99,007 $611 $4,950 0 0
Brian J. Koriner 20 57 2.85 9 10 4 15.79% 40.35% $51,632 $906 $2,582 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
Gerald W. Butler 13 113 8.69 14 15 15 12.39% 38.94% $64,878 $574 $4,991 0 0
Brian J. Koriner 14 45 3.21 7 4 4 15.56% 33.33% $51,874 $1,153 $3,705 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
Gerald W. Butler 18 123 6.83 14 11 21 11.38% 37.4% $71,777 $584 $3,988 0 0
Brian J. Koriner 17 54 3.18 11 17 5 20.37% 61.11% $96,987 $1,796 $5,705 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
Gerald W. Butler 23 153 6.65 17 16 21 11.11% 35.29% $70,340 $460 $3,058 0 0
Brian J. Koriner 14 40 2.86 6 7 3 15% 40% $55,942 $1,399 $3,996 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
Gerald W. Butler 12 103 8.58 11 11 7 10.68% 28.16% $45,148 $438 $3,762 0 0
Brian J. Koriner 6 26 4.33 4 1 1 15.38% 23.08% $48,035 $1,848 $8,006 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
Gerald W. Butler 12 104 8.67 10 11 7 9.62% 26.92% $43,673 $420 $3,639 0 0
Brian J. Koriner 4 16 4 7 2 2 43.75% 68.75% $44,670 $2,792 $11,168 0 0