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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
Dale Koler 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
Mario Serey, Jr. 6 10 1.67 0 0 2 0% 20% $9,130 $913 $1,522 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
Dale Koler 1 4 4 0 0 0 0% 0% $830 $208 $830 0 0
Mario Serey, Jr. 21 129 6.14 14 16 18 10.85% 37.21% $326,005 $2,527 $15,524 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
Dale Koler 1 2 2 1 0 1 50% 100% $7,878 $3,939 $7,878 0 0
Mario Serey, Jr. 61 408 6.69 54 54 57 13.24% 40.44% $1,277,959 $3,132 $20,950 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
Dale Koler 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
Mario Serey, Jr. 48 350 7.29 40 51 47 11.43% 39.43% $1,264,765 $3,614 $26,349 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
Dale Koler 3 8 2.67 1 3 2 12.5% 75% $13,665 $1,708 $4,555 0 0
Mario Serey, Jr. 51 316 6.2 45 46 43 14.24% 42.41% $1,465,068 $4,636 $28,727 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
Dale Koler 2 9 4.5 1 2 4 11.11% 77.78% $11,431 $1,270 $5,716 0 0
Mario Serey, Jr. 34 216 6.35 32 32 30 14.81% 43.52% $742,041 $3,435 $21,825 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
Dale Koler 3 10 3.33 2 2 1 20% 50% $12,301 $1,230 $4,100 0 0
Mario Serey, Jr. 21 122 5.81 20 11 20 16.39% 41.8% $377,412 $3,094 $17,972 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
Dale Koler 3 6 2 0 1 0 0% 16.67% $2,400 $400 $800 0 0
Mario Serey, Jr. 10 17 1.7 2 4 2 11.76% 47.06% $46,660 $2,745 $4,666 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
Dale Koler 1 5 5 1 0 1 20% 40% $5,080 $1,016 $5,080 0 0
Mario Serey, Jr. 62 309 4.98 27 44 34 8.74% 33.98% $627,638 $2,031 $10,123 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
Dale Koler 2 7 3.5 1 1 0 14.29% 28.57% $6,750 $964 $3,375 0 0
Mario Serey, Jr. 81 350 4.32 37 43 60 10.57% 40% $1,333,005 $3,809 $16,457 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
Dale Koler 2 9 4.5 0 1 0 0% 11.11% $4,278 $475 $2,139 0 0
Mario Serey, Jr. 110 547 4.97 94 78 61 17.18% 42.6% $2,871,013 $5,249 $26,100 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. 4 13.53% 40.55% $5,513 $22,031
Dale Koler 3 16 5.33 0 0 2 0% 12.5% $5,595 $350 $1,865 0 0
Mario Serey, Jr. 77 443 5.75 56 57 57 12.64% 38.37% $1,633,828 $3,688 $21,219 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
Dale Koler 2 12 6 1 2 1 8.33% 33.33% $7,420 $618 $3,710 0 0
Mario Serey, Jr. 70 460 6.57 67 75 56 14.57% 43.04% $1,942,457 $4,223 $27,749 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
Dale Koler 5 24 4.8 2 4 2 8.33% 33.33% $16,537 $689 $3,307 0 0
Mario Serey, Jr. 37 251 6.78 42 42 38 16.73% 48.61% $1,187,416 $4,731 $32,092 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
Dale Koler 2 10 5 2 2 1 20% 50% $10,434 $1,043 $5,217 0 0
Mario Serey, Jr. 16 141 8.81 11 12 18 7.8% 29.08% $440,797 $3,126 $27,550 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
Dale Koler 3 19 6.33 2 0 5 10.53% 36.84% $10,304 $542 $3,435 0 0
Mario Serey, Jr. 20 132 6.6 8 15 14 6.06% 28.03% $335,505 $2,542 $16,775 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
Dale Koler 3 12 4 1 1 1 8.33% 25% $5,595 $466 $1,865 0 0
Mario Serey, Jr. 30 147 4.9 9 21 20 6.12% 34.01% $425,115 $2,892 $14,171 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
Dale Koler 2 14 7 0 1 1 0% 14.29% $4,392 $314 $2,196 0 0
Mario Serey, Jr. 22 87 3.95 13 14 11 14.94% 43.68% $374,499 $4,305 $17,023 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
Dale Koler 2 15 7.5 0 1 0 0% 6.67% $2,489 $166 $1,245 0 0
Mario Serey, Jr. 4 9 2.25 0 1 0 0% 11.11% $7,520 $836 $1,880 0 0