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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
Robert E. Gamber 2 7 3.5 0 0 2 0% 28.57% $11,325 $1,618 $5,663 0 0
Tirso Rivera 1 1 1 0 0 0 0% 0% $432 $432 $432 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
Robert E. Gamber 1 2 2 0 0 0 0% 0% $1,460 $730 $1,460 0 0
Tirso Rivera 3 17 5.67 3 2 1 17.65% 35.29% $28,857 $1,697 $9,619 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
Robert E. Gamber 3 13 4.33 1 0 2 7.69% 23.08% $17,495 $1,346 $5,832 0 0
Tirso Rivera 1 6 6 0 1 0 0% 16.67% $11,393 $1,899 $11,393 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
Robert E. Gamber 5 25 5 0 3 1 0% 16% $43,188 $1,728 $8,638 0 0
Tirso Rivera 2 4 2 0 0 4 0% 100% $12,276 $3,069 $6,138 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
Robert E. Gamber 6 30 5 2 1 3 6.67% 20% $65,629 $2,188 $10,938 0 0
Tirso Rivera 4 32 8 6 5 3 18.75% 43.75% $86,385 $2,700 $21,596 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
Robert E. Gamber 8 36 4.5 1 1 0 2.78% 5.56% $49,311 $1,370 $6,164 0 0
Tirso Rivera 7 41 5.86 3 1 7 7.32% 26.83% $94,503 $2,305 $13,500 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
Robert E. Gamber 5 35 7 2 1 6 5.71% 25.71% $76,078 $2,174 $15,216 0 0
Tirso Rivera 12 68 5.67 5 10 12 7.35% 39.71% $195,324 $2,872 $16,277 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
Robert E. Gamber 5 24 4.8 1 0 2 4.17% 12.5% $35,970 $1,499 $7,194 0 0
Tirso Rivera 5 20 4 6 2 3 30% 55% $166,106 $8,305 $33,221 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
Robert E. Gamber 10 39 3.9 1 0 1 2.56% 5.13% $19,624 $503 $1,962 0 0
Tirso Rivera 5 22 4.4 7 1 5 31.82% 59.09% $145,932 $6,633 $29,186 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
Robert E. Gamber 9 57 6.33 4 0 6 7.02% 17.54% $70,290 $1,233 $7,810 0 0
Tirso Rivera 3 21 7 0 3 4 0% 33.33% $29,984 $1,428 $9,995 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
Robert E. Gamber 11 78 7.09 3 5 8 3.85% 20.51% $78,284 $1,004 $7,117 0 0
Tirso Rivera 5 40 8 6 5 13 15% 60% $108,143 $2,704 $21,629 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
Robert E. Gamber 13 51 3.92 1 1 2 1.96% 7.84% $34,690 $680 $2,668 0 0
Tirso Rivera 4 13 3.25 0 1 1 0% 15.38% $7,617 $586 $1,904 0 0