Skip to:

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
Filiberto Quiroz 27 79 2.93 8 10 9 10.13% 34.18% $196,317 $2,485 $7,271 0 0
Don Roberson 2 5 2.5 0 1 0 0% 20% $6,426 $1,285 $3,213 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
Filiberto Quiroz 31 185 5.97 21 19 24 11.35% 34.59% $605,998 $3,276 $19,548 0 0
Don Roberson 3 24 8 2 3 2 8.33% 29.17% $33,929 $1,414 $11,310 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
Filiberto Quiroz 25 150 6 12 22 17 8% 34% $583,909 $3,893 $23,356 0 1
Don Roberson 3 8 2.67 1 1 4 12.5% 75% $23,776 $2,972 $7,925 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 23 95 4.13 3 5 10 3.16% 18.95% $181,487 $1,910 $7,891 0 0
Filiberto Quiroz 10 38 3.8 5 5 9 13.16% 50% $137,004 $3,605 $13,700 0 0
Don Roberson 7 28 4 3 3 5 10.71% 39.29% $49,785 $1,778 $7,112 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 31 124 4 10 9 14 8.06% 26.61% $418,835 $3,378 $13,511 0 0
Filiberto Quiroz 8 32 4 4 3 2 12.5% 28.13% $87,201 $2,725 $10,900 0 0
Don Roberson 13 41 3.15 5 1 4 12.2% 24.39% $83,681 $2,041 $6,437 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 40 189 4.73 15 11 32 7.94% 30.69% $627,061 $3,318 $15,677 0 0
Filiberto Quiroz 11 74 6.73 6 12 12 8.11% 40.54% $82,651 $1,117 $7,514 0 0
Don Roberson 19 105 5.53 10 13 9 9.52% 30.48% $249,913 $2,380 $13,153 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 42 200 4.76 11 18 18 5.5% 23.5% $494,421 $2,472 $11,772 0 0
Filiberto Quiroz 6 37 6.17 1 5 10 2.7% 43.24% $28,774 $778 $4,796 0 0
Don Roberson 17 47 2.76 5 3 5 10.64% 27.66% $95,986 $2,042 $5,646 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 46 244 5.3 22 23 34 9.02% 32.38% $1,217,771 $4,991 $26,473 0 0
Filiberto Quiroz 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
Don Roberson 7 7 1 0 0 0 0% 0% $3,080 $440 $440 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 71 312 4.39 29 35 40 9.29% 33.33% $1,938,669 $6,214 $27,305 2 3
Filiberto Quiroz 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
Don Roberson 24 94 3.92 8 9 10 8.51% 28.72% $181,686 $1,933 $7,570 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 100 359 3.59 48 58 35 13.37% 39.28% $2,675,001 $7,451 $26,750 3 3
Filiberto Quiroz 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
Don Roberson 35 135 3.86 15 20 14 11.11% 36.3% $123,696 $916 $3,534 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 108 392 3.63 56 44 45 14.29% 36.99% $3,155,180 $8,049 $29,215 5 7
Filiberto Quiroz 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
Don Roberson 55 220 4 26 34 20 11.82% 36.36% $558,415 $2,538 $10,153 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 105 434 4.13 76 60 48 17.51% 42.4% $5,612,199 $12,931 $53,450 3 4
Filiberto Quiroz 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
Don Roberson 48 186 3.88 30 31 20 16.13% 43.55% $413,662 $2,224 $8,618 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 113 408 3.61 66 62 51 16.18% 43.87% $2,886,890 $7,076 $25,548 2 9
Filiberto Quiroz 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
Don Roberson 37 166 4.49 12 16 16 7.23% 26.51% $141,755 $854 $3,831 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 94 370 3.94 72 66 51 19.46% 51.08% $6,245,281 $16,879 $66,439 5 13
Filiberto Quiroz 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
Don Roberson 36 156 4.33 16 17 18 10.26% 32.69% $237,629 $1,523 $6,601 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 121 436 3.6 62 55 60 14.22% 40.6% $5,140,794 $11,791 $42,486 5 8
Filiberto Quiroz 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
Don Roberson 20 72 3.6 21 7 3 29.17% 43.06% $333,206 $4,628 $16,660 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
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
Filiberto Quiroz 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
Don Roberson 39 189 4.85 32 24 15 16.93% 37.57% $433,718 $2,295 $11,121 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 104 462 4.44 86 70 65 18.61% 47.84% $8,201,418 $17,752 $78,860 13 19
Filiberto Quiroz 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
Don Roberson 66 248 3.76 43 41 35 17.34% 47.98% $650,461 $2,623 $9,855 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 100 452 4.52 86 68 52 19.03% 45.58% $6,968,292 $15,417 $69,683 8 16
Filiberto Quiroz 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
Don Roberson 75 309 4.12 42 36 44 13.59% 39.48% $570,702 $1,847 $7,609 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 116 507 4.37 77 86 59 15.19% 43.79% $5,344,914 $10,542 $46,077 10 11
Filiberto Quiroz 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
Don Roberson 67 362 5.4 49 61 42 13.54% 41.99% $718,510 $1,985 $10,724 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 118 525 4.45 90 83 67 17.14% 45.71% $3,713,208 $7,073 $31,468 0 2
Filiberto Quiroz 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
Don Roberson 109 478 4.39 68 65 37 14.23% 35.56% $999,719 $2,091 $9,172 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 96 451 4.7 71 62 64 15.74% 43.68% $5,124,106 $11,362 $53,376 3 5
Filiberto Quiroz 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
Don Roberson 111 433 3.9 77 75 40 17.78% 44.34% $1,221,075 $2,820 $11,001 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
Filiberto Quiroz 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
Don Roberson 77 342 4.44 43 48 44 12.57% 39.47% $789,112 $2,307 $10,248 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 73 341 4.67 53 38 30 15.54% 35.48% $3,315,836 $9,724 $45,422 6 6
Filiberto Quiroz 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
Don Roberson 106 451 4.25 54 60 67 11.97% 40.13% $796,550 $1,766 $7,515 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 86 366 4.26 50 41 55 13.66% 39.89% $2,469,150 $6,746 $28,711 3 4
Filiberto Quiroz 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
Don Roberson 43 199 4.63 27 25 21 13.57% 36.68% $276,218 $1,388 $6,424 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 106 457 4.31 67 52 64 14.66% 40.04% $3,268,313 $7,152 $30,833 5 7
Filiberto Quiroz 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
Don Roberson 54 217 4.02 34 32 31 15.67% 44.7% $454,590 $2,095 $8,418 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 89 398 4.47 62 54 45 15.58% 40.45% $5,758,267 $14,468 $64,700 9 13
Filiberto Quiroz 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
Don Roberson 69 256 3.71 28 30 47 10.94% 41.02% $192,121 $750 $2,784 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 64 354 5.53 46 58 53 12.99% 44.35% $3,224,230 $9,108 $50,379 6 7
Filiberto Quiroz 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
Don Roberson 32 164 5.13 35 29 17 21.34% 49.39% $265,006 $1,616 $8,281 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
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
Filiberto Quiroz 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
Don Roberson 50 256 5.12 36 37 37 14.06% 42.97% $158,679 $620 $3,174 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 53 327 6.17 39 42 27 11.93% 33.03% $1,664,353 $5,090 $31,403 4 8
Filiberto Quiroz 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
Don Roberson 33 197 5.97 39 28 32 19.8% 50.25% $130,822 $664 $3,964 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 43 247 5.74 27 21 26 10.93% 29.96% $2,921,991 $11,830 $67,953 4 6
Filiberto Quiroz 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
Don Roberson 15 110 7.33 16 17 18 14.55% 46.36% $65,310 $594 $4,354 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 33 226 6.85 29 29 39 12.83% 42.92% $2,453,009 $10,854 $74,334 3 5
Filiberto Quiroz 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
Don Roberson 25 166 6.64 25 21 17 15.06% 37.95% $67,081 $404 $2,683 0 0