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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
2023 National Trainer Avg. 3.96 13.53% 40.55% $5,237 $20,757
Nicholas P. Zito 6 11 1.83 0 0 1 0% 9.09% $22,580 $2,053 $3,763 0 0
Gerald Iverson 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
John A. Shirreffs 19 32 1.68 1 4 10 3.13% 46.88% $221,960 $6,936 $11,682 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
2023 National Trainer Avg. 3.96 13.53% 40.55% $5,237 $20,757
Nicholas P. Zito 10 53 5.3 3 6 6 5.66% 28.3% $227,025 $4,283 $22,703 0 0
Gerald Iverson 1 3 3 0 0 1 0% 33.33% $4,872 $1,624 $4,872 0 0
John A. Shirreffs 31 95 3.06 11 6 18 11.58% 36.84% $1,004,900 $10,578 $32,416 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
2023 National Trainer Avg. 3.96 13.53% 40.55% $5,237 $20,757
Nicholas P. Zito 22 72 3.27 0 3 13 0% 22.22% $158,534 $2,202 $7,206 0 0
Gerald Iverson 1 8 8 0 0 2 0% 25% $5,238 $655 $5,238 0 0
John A. Shirreffs 35 100 2.86 14 13 12 14% 39% $1,956,365 $19,564 $55,896 5 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
2023 National Trainer Avg. 3.96 13.53% 40.55% $5,237 $20,757
Nicholas P. Zito 23 95 4.13 3 5 10 3.16% 18.95% $181,487 $1,910 $7,891 0 0
Gerald Iverson 1 3 3 0 0 0 0% 0% $1,250 $417 $1,250 0 0
John A. Shirreffs 31 111 3.58 18 20 22 16.22% 54.05% $2,056,016 $18,523 $66,323 5 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
2023 National Trainer Avg. 3.96 13.53% 40.55% $5,237 $20,757
Nicholas P. Zito 31 124 4 10 9 14 8.06% 26.61% $418,835 $3,378 $13,511 0 0
Gerald Iverson 1 3 3 0 1 0 0% 33.33% $5,480 $1,827 $5,480 0 0
John A. Shirreffs 26 77 2.96 13 15 9 16.88% 48.05% $1,746,160 $22,677 $67,160 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
2023 National Trainer Avg. 3.96 13.53% 40.55% $5,237 $20,757
Nicholas P. Zito 40 189 4.73 15 11 32 7.94% 30.69% $627,061 $3,318 $15,677 0 0
Gerald Iverson 3 18 6 2 1 4 11.11% 38.89% $24,810 $1,378 $8,270 0 0
John A. Shirreffs 28 117 4.18 26 19 17 22.22% 52.99% $1,921,538 $16,423 $68,626 5 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
2023 National Trainer Avg. 3.96 13.53% 40.55% $5,237 $20,757
Nicholas P. Zito 42 200 4.76 11 18 18 5.5% 23.5% $494,421 $2,472 $11,772 0 0
Gerald Iverson 7 22 3.14 0 1 5 0% 27.27% $27,226 $1,238 $3,889 0 0
John A. Shirreffs 27 98 3.63 9 12 19 9.18% 40.82% $598,395 $6,106 $22,163 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
2023 National Trainer Avg. 3.96 13.53% 40.55% $5,237 $20,757
Nicholas P. Zito 46 244 5.3 22 23 34 9.02% 32.38% $1,217,771 $4,991 $26,473 0 0
Gerald Iverson 2 14 7 1 2 0 7.14% 21.43% $12,745 $910 $6,373 0 0
John A. Shirreffs 24 70 2.92 6 15 9 8.57% 42.86% $1,349,800 $19,283 $56,242 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
2023 National Trainer Avg. 3.96 13.53% 40.55% $5,237 $20,757
Nicholas P. Zito 65 294 4.52 22 24 37 7.48% 28.23% $997,682 $3,393 $15,349 0 0
Gerald Iverson 3 12 4 1 2 3 8.33% 50% $19,917 $1,660 $6,639 0 0
John A. Shirreffs 25 93 3.72 9 11 21 9.68% 44.09% $927,483 $9,973 $37,099 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
2023 National Trainer Avg. 3.96 13.53% 40.55% $5,237 $20,757
Nicholas P. Zito 75 250 3.33 15 19 24 6% 23.2% $1,014,497 $4,058 $13,527 0 0
Gerald Iverson 3 24 8 2 2 2 8.33% 25% $25,580 $1,066 $8,527 0 0
John A. Shirreffs 22 79 3.59 13 13 6 16.46% 40.51% $927,764 $11,744 $42,171 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
2023 National Trainer Avg. 3.96 13.53% 40.55% $5,237 $20,757
Nicholas P. Zito 71 273 3.85 29 28 38 10.62% 34.8% $1,682,257 $6,162 $23,694 1 1
Gerald Iverson 2 5 2.5 0 0 0 0% 0% $1,460 $292 $730 0 0
John A. Shirreffs 42 126 3 13 19 19 10.32% 40.48% $1,485,527 $11,790 $35,370 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
2023 National Trainer Avg. 3.96 13.53% 40.55% $5,237 $20,757
Nicholas P. Zito 71 312 4.39 29 35 40 9.29% 33.33% $1,938,669 $6,214 $27,305 2 3
Gerald Iverson 2 6 3 1 0 0 16.67% 16.67% $10,730 $1,788 $5,365 0 0
John A. Shirreffs 50 140 2.8 23 20 13 16.43% 40% $1,734,523 $12,389 $34,690 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
2023 National Trainer Avg. 3.96 13.53% 40.55% $5,237 $20,757
Nicholas P. Zito 100 359 3.59 48 58 35 13.37% 39.28% $2,675,001 $7,451 $26,750 3 3
Gerald Iverson 3 14 4.67 3 0 1 21.43% 28.57% $29,248 $2,089 $9,749 0 0
John A. Shirreffs 49 139 2.84 20 23 25 14.39% 48.92% $1,618,296 $11,642 $33,026 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
2023 National Trainer Avg. 3.96 13.53% 40.55% $5,237 $20,757
Nicholas P. Zito 108 392 3.63 56 44 45 14.29% 36.99% $3,155,180 $8,049 $29,215 5 7
Gerald Iverson 2 12 6 1 1 2 8.33% 33.33% $19,120 $1,593 $9,560 0 0
John A. Shirreffs 46 144 3.13 25 19 22 17.36% 45.83% $2,000,149 $13,890 $43,482 4 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
2023 National Trainer Avg. 3.96 13.53% 40.55% $5,237 $20,757
Nicholas P. Zito 105 434 4.13 76 60 48 17.51% 42.4% $5,612,199 $12,931 $53,450 3 4
Gerald Iverson 1 12 12 0 1 2 0% 25% $7,655 $638 $7,655 0 0
John A. Shirreffs 31 84 2.71 14 9 14 16.67% 44.05% $3,099,339 $36,897 $99,979 8 9

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
2023 National Trainer Avg. 3.96 13.53% 40.55% $5,237 $20,757
Nicholas P. Zito 113 408 3.61 66 62 51 16.18% 43.87% $2,886,890 $7,076 $25,548 2 9
Gerald Iverson 1 2 2 0 1 0 0% 50% $3,040 $1,520 $3,040 0 0
John A. Shirreffs 36 99 2.75 21 7 22 21.21% 50.51% $5,706,892 $57,645 $158,525 11 12

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
2023 National Trainer Avg. 3.96 13.53% 40.55% $5,237 $20,757
Nicholas P. Zito 94 370 3.94 72 66 51 19.46% 51.08% $6,245,281 $16,879 $66,439 5 13
Gerald Iverson 1 2 2 0 0 0 0% 0% $0 $0 $0 0 0
John A. Shirreffs 41 105 2.56 18 16 14 17.14% 45.71% $3,970,093 $37,810 $96,832 9 9

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
2023 National Trainer Avg. 3.96 13.53% 40.55% $5,237 $20,757
Nicholas P. Zito 121 436 3.6 62 55 60 14.22% 40.6% $5,140,794 $11,791 $42,486 5 8
Gerald Iverson 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
John A. Shirreffs 47 115 2.45 27 12 15 23.48% 46.96% $3,007,147 $26,149 $63,982 7 9

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
2023 National Trainer Avg. 3.96 13.53% 40.55% $5,237 $20,757
Nicholas P. Zito 109 422 3.87 71 66 58 16.82% 46.21% $4,298,811 $10,187 $39,439 4 6
Gerald Iverson 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
John A. Shirreffs 48 140 2.92 26 19 22 18.57% 47.86% $2,562,058 $18,300 $53,376 6 8

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
2023 National Trainer Avg. 3.96 13.53% 40.55% $5,237 $20,757
Nicholas P. Zito 104 462 4.44 86 70 65 18.61% 47.84% $8,201,418 $17,752 $78,860 13 19
Gerald Iverson 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
John A. Shirreffs 59 163 2.76 34 17 25 20.86% 46.63% $3,649,864 $22,392 $61,862 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
2023 National Trainer Avg. 3.96 13.53% 40.55% $5,237 $20,757
Nicholas P. Zito 100 452 4.52 86 68 52 19.03% 45.58% $6,968,292 $15,417 $69,683 8 16
Gerald Iverson 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
John A. Shirreffs 61 182 2.98 23 18 25 12.64% 36.26% $1,453,958 $7,989 $23,835 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
2023 National Trainer Avg. 3.96 13.53% 40.55% $5,237 $20,757
Nicholas P. Zito 116 507 4.37 77 86 59 15.19% 43.79% $5,344,914 $10,542 $46,077 10 11
Gerald Iverson 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
John A. Shirreffs 62 163 2.63 33 18 26 20.25% 47.24% $2,240,772 $13,747 $36,141 6 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
2023 National Trainer Avg. 3.96 13.53% 40.55% $5,237 $20,757
Nicholas P. Zito 118 525 4.45 90 83 67 17.14% 45.71% $3,713,208 $7,073 $31,468 0 2
Gerald Iverson 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
John A. Shirreffs 46 147 3.2 25 19 26 17.01% 47.62% $1,834,772 $12,481 $39,886 3 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
2023 National Trainer Avg. 3.96 13.53% 40.55% $5,237 $20,757
Nicholas P. Zito 96 451 4.7 71 62 64 15.74% 43.68% $5,124,106 $11,362 $53,376 3 5
Gerald Iverson 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
John A. Shirreffs 50 154 3.08 20 14 21 12.99% 35.71% $976,776 $6,343 $19,536 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
2023 National Trainer Avg. 3.96 13.53% 40.55% $5,237 $20,757
Nicholas P. Zito 98 453 4.62 65 63 71 14.35% 43.93% $4,332,907 $9,565 $44,213 4 5
Gerald Iverson 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
John A. Shirreffs 40 119 2.98 27 25 16 22.69% 57.14% $1,931,038 $16,227 $48,276 4 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
2023 National Trainer Avg. 3.96 13.53% 40.55% $5,237 $20,757
Nicholas P. Zito 73 341 4.67 53 38 30 15.54% 35.48% $3,315,836 $9,724 $45,422 6 6
Gerald Iverson 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
John A. Shirreffs 24 75 3.13 30 10 8 40% 64% $2,076,363 $27,685 $86,515 7 9

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
2023 National Trainer Avg. 3.96 13.53% 40.55% $5,237 $20,757
Nicholas P. Zito 86 366 4.26 50 41 55 13.66% 39.89% $2,469,150 $6,746 $28,711 3 4
Gerald Iverson 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
John A. Shirreffs 21 66 3.14 18 15 8 27.27% 62.12% $809,229 $12,261 $38,535 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
2023 National Trainer Avg. 3.96 13.53% 40.55% $5,237 $20,757
Nicholas P. Zito 106 457 4.31 67 52 64 14.66% 40.04% $3,268,313 $7,152 $30,833 5 7
Gerald Iverson 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
John A. Shirreffs 17 59 3.47 10 8 8 16.95% 44.07% $641,187 $10,868 $37,717 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
2023 National Trainer Avg. 3.96 13.53% 40.55% $5,237 $20,757
Nicholas P. Zito 89 398 4.47 62 54 45 15.58% 40.45% $5,758,267 $14,468 $64,700 9 13
Gerald Iverson 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
John A. Shirreffs 18 61 3.39 16 10 5 26.23% 50.82% $545,488 $8,942 $30,305 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
2023 National Trainer Avg. 3.96 13.53% 40.55% $5,237 $20,757
Nicholas P. Zito 64 354 5.53 46 58 53 12.99% 44.35% $3,224,230 $9,108 $50,379 6 7
Gerald Iverson 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
John A. Shirreffs 19 48 2.53 7 8 6 14.58% 43.75% $309,500 $6,448 $16,289 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
2023 National Trainer Avg. 3.96 13.53% 40.55% $5,237 $20,757
Nicholas P. Zito 64 417 6.52 45 41 44 10.79% 31.18% $2,348,809 $5,633 $36,700 2 3
Gerald Iverson 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
John A. Shirreffs 15 66 4.4 10 10 9 15.15% 43.94% $450,514 $6,826 $30,034 1 2