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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 E. Thomas 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
Karen E. Jacks 42 165 3.93 29 15 29 17.58% 44.24% $816,102 $4,946 $19,431 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
Mark E. Thomas 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
Mark E. Thomas 0 0 0 0 0 0 0% 0% $0 $0 $0 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
Mark E. Thomas 7 30 4.29 4 5 6 13.33% 50% $68,702 $2,290 $9,815 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
Mark E. Thomas 10 39 3.9 7 7 7 17.95% 53.85% $119,550 $3,065 $11,955 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
Mark E. Thomas 12 41 3.42 2 4 9 4.88% 36.59% $52,303 $1,276 $4,359 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
Mark E. Thomas 12 51 4.25 9 8 7 17.65% 47.06% $133,723 $2,622 $11,144 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
Mark E. Thomas 14 65 4.64 10 10 8 15.38% 43.08% $126,136 $1,941 $9,010 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
Mark E. Thomas 15 63 4.2 7 11 14 11.11% 50.79% $122,995 $1,952 $8,200 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
Mark E. Thomas 16 71 4.44 9 6 12 12.68% 38.03% $139,148 $1,960 $8,697 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
Mark E. Thomas 16 62 3.88 7 5 12 11.29% 38.71% $137,553 $2,219 $8,597 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
Mark E. Thomas 15 40 2.67 7 8 2 17.5% 42.5% $94,759 $2,369 $6,317 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
Mark E. Thomas 16 47 2.94 6 6 6 12.77% 38.3% $91,139 $1,939 $5,696 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
Mark E. Thomas 14 40 2.86 3 3 5 7.5% 27.5% $48,106 $1,203 $3,436 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
Mark E. Thomas 11 37 3.36 4 7 4 10.81% 40.54% $128,963 $3,485 $11,724 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
Mark E. Thomas 14 43 3.07 5 5 6 11.63% 37.21% $119,061 $2,769 $8,504 0 1
Karen E. Jacks 3 4 1.33 1 0 1 25% 50% $5,280 $1,320 $1,760 0 0