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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
Randy L. Preston 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
Karen E. Jacks 45 211 4.69 36 22 34 17.06% 43.6% $1,100,304 $5,215 $24,451 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
Randy L. Preston 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
Karen E. Jacks 55 359 6.53 36 66 51 10.03% 42.62% $1,225,393 $3,413 $22,280 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
Randy L. Preston 2 13 6.5 0 1 1 0% 15.38% $14,157 $1,089 $7,079 0 0
Karen E. Jacks 54 352 6.52 46 53 52 13.07% 42.9% $1,633,716 $4,641 $30,254 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 $22,031
Randy L. Preston 5 18 3.6 1 1 1 5.56% 16.67% $21,986 $1,221 $4,397 0 0
Karen E. Jacks 45 275 6.11 43 33 35 15.64% 40.36% $1,361,863 $4,952 $30,264 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 $22,031
Randy L. Preston 8 28 3.5 2 2 3 7.14% 25% $66,134 $2,362 $8,267 0 0
Karen E. Jacks 31 233 7.52 28 29 39 12.02% 41.2% $997,544 $4,281 $32,179 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
Randy L. Preston 3 12 4 0 0 0 0% 0% $5,020 $418 $1,673 0 0
Karen E. Jacks 38 169 4.45 19 14 24 11.24% 33.73% $799,204 $4,729 $21,032 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
Randy L. Preston 1 7 7 0 0 0 0% 0% $870 $124 $870 0 0
Karen E. Jacks 27 115 4.26 10 12 18 8.7% 34.78% $342,888 $2,982 $12,700 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
Randy L. Preston 1 10 10 1 0 1 10% 20% $12,334 $1,233 $12,334 0 0
Karen E. Jacks 21 141 6.71 12 14 22 8.51% 34.04% $300,656 $2,132 $14,317 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
Randy L. Preston 3 13 4.33 1 4 0 7.69% 38.46% $18,254 $1,404 $6,085 0 0
Karen E. Jacks 23 144 6.26 7 9 22 4.86% 26.39% $137,509 $955 $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
Randy L. Preston 2 9 4.5 0 0 2 0% 22.22% $10,348 $1,150 $5,174 0 0
Karen E. Jacks 21 164 7.81 15 16 17 9.15% 29.27% $193,142 $1,178 $9,197 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
Randy L. Preston 2 10 5 1 3 2 10% 60% $51,000 $5,100 $25,500 0 0
Karen E. Jacks 20 133 6.65 12 15 22 9.02% 36.84% $228,004 $1,714 $11,400 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
Randy L. Preston 4 13 3.25 0 1 1 0% 15.38% $12,175 $937 $3,044 0 0
Karen E. Jacks 16 104 6.5 10 22 17 9.62% 47.12% $165,180 $1,588 $10,324 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
Randy L. Preston 4 16 4 0 0 0 0% 0% $3,419 $214 $855 0 0
Karen E. Jacks 9 44 4.89 4 12 8 9.09% 54.55% $52,598 $1,195 $5,844 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
Randy L. Preston 3 15 5 1 1 0 6.67% 13.33% $21,474 $1,432 $7,158 0 0
Karen E. Jacks 7 44 6.29 5 5 2 11.36% 27.27% $40,260 $915 $5,751 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
Randy L. Preston 3 18 6 0 1 1 0% 11.11% $14,854 $825 $4,951 0 0
Karen E. Jacks 6 30 5 2 3 1 6.67% 20% $31,756 $1,059 $5,293 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
Randy L. Preston 6 33 5.5 0 1 3 0% 12.12% $17,451 $529 $2,909 0 0
Karen E. Jacks 3 4 1.33 1 0 1 25% 50% $5,280 $1,320 $1,760 0 0