Skip to:

OwnerView is growing. Help introduce others to ownership.
Visit the
New Site

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
Terry J. Brennan 4 8 2 0 1 0 0% 12.5% $9,174 $1,147 $2,294 0 0
Kathleen Mastin 1 1 1 1 0 0 100% 100% $15,900 $15,900 $15,900 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
Terry J. Brennan 7 17 2.43 1 3 1 5.88% 29.41% $58,981 $3,469 $8,426 0 0
Kathleen Mastin 4 22 5.5 0 6 3 0% 40.91% $31,185 $1,418 $7,796 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
Terry J. Brennan 13 46 3.54 2 3 4 4.35% 19.57% $161,673 $3,515 $12,436 0 0
Kathleen Mastin 7 21 3 3 1 2 14.29% 28.57% $55,616 $2,648 $7,945 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
Terry J. Brennan 13 40 3.08 3 2 7 7.5% 30% $242,264 $6,057 $18,636 0 0
Kathleen Mastin 2 12 6 0 2 1 0% 25% $11,243 $937 $5,622 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
Terry J. Brennan 13 38 2.92 1 5 3 2.63% 23.68% $166,309 $4,377 $12,793 0 0
Kathleen Mastin 5 38 7.6 2 9 7 5.26% 47.37% $114,558 $3,015 $22,912 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
Terry J. Brennan 6 33 5.5 1 4 5 3.03% 30.3% $108,659 $3,293 $18,110 0 0
Kathleen Mastin 3 23 7.67 3 5 5 13.04% 56.52% $89,167 $3,877 $29,722 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
Terry J. Brennan 5 19 3.8 2 2 3 10.53% 36.84% $83,310 $4,385 $16,662 0 0
Kathleen Mastin 4 11 2.75 0 0 1 0% 9.09% $4,513 $410 $1,128 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
Terry J. Brennan 5 7 1.4 0 1 0 0% 14.29% $20,033 $2,862 $4,007 0 0
Kathleen Mastin 4 22 5.5 0 2 8 0% 45.45% $18,898 $859 $4,725 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
Terry J. Brennan 3 10 3.33 0 1 1 0% 20% $20,053 $2,005 $6,684 0 0
Kathleen Mastin 2 20 10 1 4 2 5% 35% $23,330 $1,167 $11,665 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
Terry J. Brennan 6 17 2.83 0 1 0 0% 5.88% $7,942 $467 $1,324 0 0
Kathleen Mastin 2 22 11 4 2 3 18.18% 40.91% $38,098 $1,732 $19,049 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
Terry J. Brennan 6 16 2.67 0 0 4 0% 25% $6,863 $429 $1,144 0 0
Kathleen Mastin 2 7 3.5 1 0 1 14.29% 28.57% $11,055 $1,579 $5,528 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
Terry J. Brennan 2 8 4 0 1 2 0% 37.5% $10,200 $1,275 $5,100 0 0
Kathleen Mastin 2 18 9 0 1 5 0% 33.33% $8,100 $450 $4,050 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
Terry J. Brennan 3 10 3.33 0 1 0 0% 10% $15,644 $1,564 $5,215 0 0
Kathleen Mastin 5 31 6.2 2 1 2 6.45% 16.13% $32,041 $1,034 $6,408 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
Terry J. Brennan 3 6 2 0 0 1 0% 16.67% $4,508 $751 $1,503 0 0
Kathleen Mastin 6 61 10.17 2 6 8 3.28% 26.23% $49,366 $809 $8,228 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
Terry J. Brennan 4 8 2 0 0 0 0% 0% $1,876 $235 $469 0 0
Kathleen Mastin 10 71 7.1 6 4 6 8.45% 22.54% $55,338 $779 $5,534 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
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,031
Terry J. Brennan 3 12 4 2 2 1 16.67% 41.67% $36,865 $3,072 $12,288 0 0
Kathleen Mastin 6 64 10.67 9 9 8 14.06% 40.63% $80,280 $1,254 $13,380 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
Terry J. Brennan 14 43 3.07 4 2 7 9.3% 30.23% $48,591 $1,130 $3,471 0 0
Kathleen Mastin 8 78 9.75 3 9 14 3.85% 33.33% $56,027 $718 $7,003 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
Terry J. Brennan 8 45 5.63 4 6 6 8.89% 35.56% $52,617 $1,169 $6,577 0 0
Kathleen Mastin 15 94 6.27 8 6 14 8.51% 29.79% $97,965 $1,042 $6,531 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
Terry J. Brennan 12 43 3.58 2 2 3 4.65% 16.28% $36,142 $841 $3,012 0 0
Kathleen Mastin 12 112 9.33 11 12 17 9.82% 35.71% $135,926 $1,214 $11,327 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
Terry J. Brennan 11 60 5.45 7 9 10 11.67% 43.33% $110,545 $1,842 $10,050 0 0
Kathleen Mastin 12 84 7 8 11 10 9.52% 34.52% $88,506 $1,054 $7,376 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
Terry J. Brennan 28 114 4.07 18 10 12 15.79% 35.09% $301,436 $2,644 $10,766 0 1
Kathleen Mastin 8 56 7 8 4 7 14.29% 33.93% $67,303 $1,202 $8,413 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
Terry J. Brennan 27 104 3.85 12 10 12 11.54% 32.69% $202,755 $1,950 $7,509 0 0
Kathleen Mastin 6 55 9.17 5 9 8 9.09% 40% $63,127 $1,148 $10,521 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
Terry J. Brennan 20 96 4.8 20 17 11 20.83% 50% $244,342 $2,545 $12,217 0 0
Kathleen Mastin 6 50 8.33 2 4 4 4% 20% $23,704 $474 $3,951 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
Terry J. Brennan 21 98 4.67 16 14 8 16.33% 38.78% $172,245 $1,758 $8,202 0 0
Kathleen Mastin 11 64 5.82 5 6 6 7.81% 26.56% $50,167 $784 $4,561 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
Terry J. Brennan 29 74 2.55 5 8 11 6.76% 32.43% $99,300 $1,342 $3,424 0 0
Kathleen Mastin 7 38 5.43 3 9 5 7.89% 44.74% $31,611 $832 $4,516 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
Terry J. Brennan 26 95 3.65 8 8 15 8.42% 32.63% $230,452 $2,426 $8,864 0 0
Kathleen Mastin 6 39 6.5 6 2 9 15.38% 43.59% $43,808 $1,123 $7,301 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
Terry J. Brennan 15 95 6.33 13 9 11 13.68% 34.74% $440,835 $4,640 $29,389 0 3
Kathleen Mastin 6 56 9.33 1 7 9 1.79% 30.36% $24,168 $432 $4,028 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
Terry J. Brennan 22 111 5.05 13 12 9 11.71% 30.63% $429,005 $3,865 $19,500 0 3
Kathleen Mastin 7 63 9 4 5 7 6.35% 25.4% $30,463 $484 $4,352 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
Terry J. Brennan 20 84 4.2 17 17 8 20.24% 50% $574,968 $6,845 $28,748 0 2
Kathleen Mastin 9 44 4.89 8 6 9 18.18% 52.27% $56,867 $1,292 $6,319 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
Terry J. Brennan 23 90 3.91 10 13 15 11.11% 42.22% $186,872 $2,076 $8,125 0 0
Kathleen Mastin 3 19 6.33 1 4 5 5.26% 52.63% $8,519 $448 $2,840 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
Terry J. Brennan 20 79 3.95 7 7 9 8.86% 29.11% $184,775 $2,339 $9,239 0 0
Kathleen Mastin 1 5 5 1 1 1 20% 60% $3,584 $717 $3,584 0 0