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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
Ronald B. Spatz 43 175 4.07 27 28 30 15.43% 48.57% $1,039,575 $5,940 $24,176 0 1
Edwin Diaz, Jr. 24 24 1 6 3 8 25% 70.83% $37,388 $1,558 $1,558 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
Ronald B. Spatz 53 186 3.51 25 32 30 13.44% 46.77% $1,086,280 $5,840 $20,496 0 2
Edwin Diaz, Jr. 133 383 2.88 143 76 57 37.34% 72.06% $852,569 $2,226 $6,410 3 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
Ronald B. Spatz 47 162 3.45 21 24 15 12.96% 37.04% $776,009 $4,790 $16,511 0 0
Edwin Diaz, Jr. 141 402 2.85 116 77 58 28.86% 62.44% $745,920 $1,856 $5,290 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
Ronald B. Spatz 47 157 3.34 27 17 18 17.2% 39.49% $957,412 $6,098 $20,370 0 4
Edwin Diaz, Jr. 133 388 2.92 102 77 57 26.29% 60.82% $698,972 $1,801 $5,255 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
Ronald B. Spatz 39 143 3.67 24 23 25 16.78% 50.35% $782,682 $5,473 $20,069 0 2
Edwin Diaz, Jr. 129 337 2.61 108 78 48 32.05% 69.44% $807,608 $2,396 $6,261 3 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
Ronald B. Spatz 34 127 3.74 24 16 20 18.9% 47.24% $618,989 $4,874 $18,206 0 0
Edwin Diaz, Jr. 70 182 2.6 58 42 29 31.87% 70.88% $394,869 $2,170 $5,641 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
Ronald B. Spatz 39 159 4.08 24 23 17 15.09% 40.25% $749,230 $4,712 $19,211 0 2
Edwin Diaz, Jr. 95 279 2.94 82 51 49 29.39% 65.23% $673,506 $2,414 $7,090 3 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
Ronald B. Spatz 34 108 3.18 15 14 17 13.89% 42.59% $474,175 $4,391 $13,946 0 1
Edwin Diaz, Jr. 110 358 3.25 106 78 52 29.61% 65.92% $737,224 $2,059 $6,702 2 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
Ronald B. Spatz 29 122 4.21 17 15 14 13.93% 37.7% $541,514 $4,439 $18,673 0 2
Edwin Diaz, Jr. 101 307 3.04 101 64 51 32.9% 70.36% $616,771 $2,009 $6,107 2 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
Ronald B. Spatz 16 72 4.5 8 8 10 11.11% 36.11% $164,685 $2,287 $10,293 0 0
Edwin Diaz, Jr. 82 264 3.22 101 47 43 38.26% 72.35% $595,135 $2,254 $7,258 5 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
Ronald B. Spatz 22 62 2.82 10 7 11 16.13% 45.16% $228,740 $3,689 $10,397 0 0
Edwin Diaz, Jr. 75 228 3.04 64 37 31 28.07% 57.89% $351,442 $1,541 $4,686 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
Ronald B. Spatz 14 39 2.79 8 5 8 20.51% 53.85% $147,988 $3,795 $10,571 0 0
Edwin Diaz, Jr. 62 285 4.6 57 63 54 20% 61.05% $280,372 $984 $4,522 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
Ronald B. Spatz 15 62 4.13 8 11 10 12.9% 46.77% $181,752 $2,931 $12,117 0 0
Edwin Diaz, Jr. 87 324 3.72 67 50 55 20.68% 53.09% $401,870 $1,240 $4,619 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
Ronald B. Spatz 32 127 3.97 25 20 14 19.69% 46.46% $528,168 $4,159 $16,505 0 0
Edwin Diaz, Jr. 50 177 3.54 48 37 25 27.12% 62.15% $231,421 $1,307 $4,628 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
Ronald B. Spatz 32 170 5.31 18 27 19 10.59% 37.65% $501,480 $2,950 $15,671 0 1
Edwin Diaz, Jr. 21 88 4.19 18 14 10 20.45% 47.73% $90,097 $1,024 $4,290 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
Ronald B. Spatz 33 154 4.67 28 20 12 18.18% 38.96% $517,556 $3,361 $15,684 0 0
Edwin Diaz, Jr. 18 69 3.83 13 13 14 18.84% 57.97% $71,438 $1,035 $3,969 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
Ronald B. Spatz 52 171 3.29 23 20 15 13.45% 33.92% $373,410 $2,184 $7,181 0 0
Edwin Diaz, Jr. 2 4 2 0 0 2 0% 50% $1,000 $250 $500 0 0