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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
Donna Bireta 9 82 9.11 5 9 6 6.1% 24.39% $117,153 $1,429 $13,017 0 0
Kenneth L. Roberts, Sr. 24 85 3.54 9 16 9 10.59% 40% $276,480 $3,253 $11,520 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
Donna Bireta 12 78 6.5 5 11 11 6.41% 34.62% $123,074 $1,578 $10,256 0 0
Kenneth L. Roberts, Sr. 29 132 4.55 21 15 21 15.91% 43.18% $363,571 $2,754 $12,537 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
Donna Bireta 13 100 7.69 10 24 17 10% 51% $247,312 $2,473 $19,024 0 0
Kenneth L. Roberts, Sr. 25 91 3.64 15 13 11 16.48% 42.86% $254,625 $2,798 $10,185 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
Donna Bireta 17 67 3.94 2 6 10 2.99% 26.87% $51,947 $775 $3,056 0 0
Kenneth L. Roberts, Sr. 19 49 2.58 6 7 6 12.24% 38.78% $102,155 $2,085 $5,377 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
Donna Bireta 22 148 6.73 9 23 20 6.08% 35.14% $160,930 $1,087 $7,315 0 0
Kenneth L. Roberts, Sr. 12 20 1.67 1 0 3 5% 20% $23,280 $1,164 $1,940 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
Donna Bireta 29 214 7.38 18 14 26 8.41% 27.1% $258,618 $1,208 $8,918 0 1
Kenneth L. Roberts, Sr. 11 24 2.18 2 2 2 8.33% 25% $20,922 $872 $1,902 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
Donna Bireta 35 223 6.37 27 18 38 12.11% 37.22% $553,363 $2,481 $15,810 0 2
Kenneth L. Roberts, Sr. 6 11 1.83 2 3 4 18.18% 81.82% $26,690 $2,426 $4,448 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
Donna Bireta 16 133 8.31 22 20 18 16.54% 45.11% $333,218 $2,505 $20,826 0 2
Kenneth L. Roberts, Sr. 1 1 1 0 0 0 0% 0% $252 $252 $252 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
Donna Bireta 13 95 7.31 13 11 16 13.68% 42.11% $120,579 $1,269 $9,275 0 0
Kenneth L. Roberts, Sr. 2 7 3.5 0 1 0 0% 14.29% $1,316 $188 $658 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
Donna Bireta 9 108 12 17 12 19 15.74% 44.44% $122,720 $1,136 $13,636 0 0
Kenneth L. Roberts, Sr. 1 1 1 0 0 0 0% 0% $0 $0 $0 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
Donna Bireta 8 109 13.63 9 13 15 8.26% 33.94% $74,775 $686 $9,347 0 0
Kenneth L. Roberts, Sr. 3 4 1.33 0 0 0 0% 0% $6,253 $1,563 $2,084 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
Donna Bireta 7 73 10.43 4 8 13 5.48% 34.25% $49,406 $677 $7,058 0 0
Kenneth L. Roberts, Sr. 1 1 1 0 0 0 0% 0% $0 $0 $0 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
Donna Bireta 2 12 6 6 3 1 50% 83.33% $20,761 $1,730 $10,381 0 0
Kenneth L. Roberts, Sr. 1 4 4 0 1 2 0% 75% $1,738 $435 $1,738 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
Donna Bireta 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
Kenneth L. Roberts, Sr. 1 2 2 0 1 0 0% 50% $1,076 $538 $1,076 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
Donna Bireta 1 2 2 1 0 0 50% 50% $1,860 $930 $1,860 0 0
Kenneth L. Roberts, Sr. 2 9 4.5 0 1 0 0% 11.11% $430 $48 $215 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
Donna Bireta 3 18 6 4 4 2 22.22% 55.56% $13,133 $730 $4,378 0 0
Kenneth L. Roberts, Sr. 6 11 1.83 1 0 1 9.09% 18.18% $13,650 $1,241 $2,275 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
Donna Bireta 0 0 0 0 0 0 0% 0% $0 $0 $0 0 0
Kenneth L. Roberts, Sr. 8 19 2.38 0 0 4 0% 21.05% $1,972 $104 $247 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
Donna Bireta 12 84 7 7 11 13 8.33% 36.9% $64,836 $772 $5,403 0 0
Kenneth L. Roberts, Sr. 1 5 5 0 0 2 0% 40% $814 $163 $814 0 0