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
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,028
Michael R. Thompson 1 1 1 0 0 0 0% 0% $395 $395 $395 0 0
George R. Arnold II 14 14 1 0 0 1 0% 7.14% $29,175 $2,084 $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 $22,028
Michael R. Thompson 3 18 6 2 4 1 11.11% 38.89% $63,358 $3,520 $21,119 0 0
George R. Arnold II 89 296 3.33 40 27 39 13.51% 35.81% $5,603,177 $18,930 $62,957 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
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,028
Michael R. Thompson 2 10 5 1 0 0 10% 10% $40,782 $4,078 $20,391 0 0
George R. Arnold II 77 265 3.44 38 29 30 14.34% 36.6% $4,372,072 $16,498 $56,780 3 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
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,028
Michael R. Thompson 1 6 6 2 0 1 33.33% 50% $79,066 $13,178 $79,066 0 0
George R. Arnold II 85 261 3.07 26 29 32 9.96% 33.33% $3,230,122 $12,376 $38,001 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
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,028
Michael R. Thompson 1 2 2 1 0 0 50% 50% $8,121 $4,061 $8,121 0 0
George R. Arnold II 82 256 3.12 32 31 27 12.5% 35.16% $2,790,593 $10,901 $34,032 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
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,028
Michael R. Thompson 1 8 8 0 0 3 0% 37.5% $7,540 $943 $7,540 0 0
George R. Arnold II 64 228 3.56 37 32 28 16.23% 42.54% $3,591,929 $15,754 $56,124 3 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
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,028
Michael R. Thompson 1 5 5 0 0 0 0% 0% $3,160 $632 $3,160 0 0
George R. Arnold II 65 223 3.43 27 22 22 12.11% 31.84% $1,586,106 $7,113 $24,402 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
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,028
Michael R. Thompson 2 4 2 0 1 0 0% 25% $6,370 $1,593 $3,185 0 0
George R. Arnold II 70 252 3.6 38 27 32 15.08% 38.49% $4,221,733 $16,753 $60,310 6 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
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,028
Michael R. Thompson 1 2 2 0 0 0 0% 0% $1,140 $570 $1,140 0 0
George R. Arnold II 57 247 4.33 38 27 31 15.38% 38.87% $2,476,021 $10,024 $43,439 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
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,028
Michael R. Thompson 2 7 3.5 0 0 1 0% 14.29% $3,878 $554 $1,939 0 0
George R. Arnold II 64 266 4.16 33 36 42 12.41% 41.73% $2,768,718 $10,409 $43,261 5 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
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,028
Michael R. Thompson 1 6 6 1 1 0 16.67% 33.33% $17,215 $2,869 $17,215 0 0
George R. Arnold II 57 248 4.35 36 33 34 14.52% 41.53% $2,238,309 $9,025 $39,269 1 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
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,028
Michael R. Thompson 1 6 6 0 3 1 0% 66.67% $16,407 $2,735 $16,407 0 0
George R. Arnold II 53 200 3.77 20 25 21 10% 33% $1,078,969 $5,395 $20,358 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 $22,028
Michael R. Thompson 1 6 6 1 1 1 16.67% 50% $16,285 $2,714 $16,285 0 0
George R. Arnold II 50 214 4.28 23 38 29 10.75% 42.06% $1,474,259 $6,889 $29,485 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
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,028
Michael R. Thompson 4 19 4.75 0 2 2 0% 21.05% $18,428 $970 $4,607 0 0
George R. Arnold II 65 234 3.6 27 32 29 11.54% 37.61% $1,704,902 $7,286 $26,229 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
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,028
Michael R. Thompson 8 30 3.75 5 2 3 16.67% 33.33% $103,751 $3,458 $12,969 0 0
George R. Arnold II 64 260 4.06 36 41 35 13.85% 43.08% $2,354,583 $9,056 $36,790 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
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,028
Michael R. Thompson 13 69 5.31 4 9 7 5.8% 28.99% $143,451 $2,079 $11,035 0 0
George R. Arnold II 84 294 3.5 34 40 38 11.56% 38.1% $1,434,029 $4,878 $17,072 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 $22,028
Michael R. Thompson 10 67 6.7 8 8 8 11.94% 35.82% $208,971 $3,119 $20,897 0 0
George R. Arnold II 82 304 3.71 37 43 36 12.17% 38.16% $2,105,210 $6,925 $25,673 2 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
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,028
Michael R. Thompson 12 74 6.17 6 5 10 8.11% 28.38% $139,031 $1,879 $11,586 0 0
George R. Arnold II 83 309 3.72 43 39 41 13.92% 39.81% $2,266,502 $7,335 $27,307 4 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
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,028
Michael R. Thompson 11 65 5.91 6 13 8 9.23% 41.54% $176,970 $2,723 $16,088 0 0
George R. Arnold II 81 313 3.86 50 36 40 15.97% 40.26% $2,392,905 $7,645 $29,542 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
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,028
Michael R. Thompson 9 48 5.33 6 3 6 12.5% 31.25% $102,589 $2,137 $11,399 0 0
George R. Arnold II 70 254 3.63 32 43 43 12.6% 46.46% $1,952,114 $7,685 $27,887 2 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
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,028
Michael R. Thompson 8 50 6.25 8 1 5 16% 28% $118,123 $2,362 $14,765 0 0
George R. Arnold II 49 171 3.49 29 17 16 16.96% 36.26% $986,944 $5,772 $20,142 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 $22,028
Michael R. Thompson 14 78 5.57 7 11 11 8.97% 37.18% $101,295 $1,299 $7,235 0 0
George R. Arnold II 47 166 3.53 22 23 26 13.25% 42.77% $1,133,117 $6,826 $24,109 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
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,028
Michael R. Thompson 15 65 4.33 9 6 4 13.85% 29.23% $91,018 $1,400 $6,068 0 0
George R. Arnold II 51 189 3.71 24 25 28 12.7% 40.74% $1,270,678 $6,723 $24,915 0 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
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,028
Michael R. Thompson 13 86 6.62 12 10 12 13.95% 39.53% $168,095 $1,955 $12,930 0 0
George R. Arnold II 63 259 4.11 34 47 35 13.13% 44.79% $1,961,444 $7,573 $31,134 1 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
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,028
Michael R. Thompson 12 69 5.75 8 5 12 11.59% 36.23% $111,969 $1,623 $9,331 0 0
George R. Arnold II 58 269 4.64 36 43 36 13.38% 42.75% $1,775,316 $6,600 $30,609 0 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
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,028
Michael R. Thompson 7 34 4.86 3 6 2 8.82% 32.35% $76,412 $2,247 $10,916 0 0
George R. Arnold II 69 289 4.19 47 43 37 16.26% 43.94% $2,421,943 $8,380 $35,101 2 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
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,028
Michael R. Thompson 8 53 6.63 3 9 14 5.66% 49.06% $100,203 $1,891 $12,525 0 0
George R. Arnold II 68 363 5.34 47 61 45 12.95% 42.15% $2,262,516 $6,233 $33,272 0 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
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,028
Michael R. Thompson 10 39 3.9 7 4 2 17.95% 33.33% $55,907 $1,434 $5,591 0 0
George R. Arnold II 71 322 4.54 60 47 29 18.63% 42.24% $2,771,678 $8,608 $39,038 1 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
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,028
Michael R. Thompson 6 39 6.5 5 3 5 12.82% 33.33% $47,832 $1,226 $7,972 0 0
George R. Arnold II 61 268 4.39 42 44 34 15.67% 44.78% $1,968,309 $7,344 $32,267 1 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
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,028
Michael R. Thompson 15 43 2.87 4 3 5 9.3% 27.91% $50,902 $1,184 $3,393 0 0
George R. Arnold II 54 270 5 51 35 33 18.89% 44.07% $2,532,526 $9,380 $46,899 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
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,028
Michael R. Thompson 5 27 5.4 2 4 2 7.41% 29.63% $26,529 $983 $5,306 0 0
George R. Arnold II 53 275 5.19 40 31 36 14.55% 38.91% $1,861,011 $6,767 $35,113 2 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
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,028
Michael R. Thompson 5 33 6.6 5 7 4 15.15% 48.48% $91,079 $2,760 $18,216 0 0
George R. Arnold II 52 230 4.42 26 35 33 11.3% 40.87% $1,043,833 $4,538 $20,074 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
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,028
Michael R. Thompson 5 20 4 3 2 5 15% 50% $15,197 $760 $3,039 0 0
George R. Arnold II 46 217 4.72 29 27 22 13.36% 35.94% $1,060,305 $4,886 $23,050 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
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,028
Michael R. Thompson 18 128 7.11 20 15 11 15.63% 35.94% $272,283 $2,127 $15,127 0 1
George R. Arnold II 41 185 4.51 24 25 36 12.97% 45.95% $1,125,238 $6,082 $27,445 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
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,028
Michael R. Thompson 16 85 5.31 15 17 14 17.65% 54.12% $255,953 $3,011 $15,997 0 0
George R. Arnold II 47 219 4.66 30 31 37 13.7% 44.75% $1,493,457 $6,819 $31,776 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
2025 National Trainer Avg. 4 13.53% 40.55% $5,513 $22,028
Michael R. Thompson 5 38 7.6 4 8 3 10.53% 39.47% $35,693 $939 $7,139 0 0
George R. Arnold II 70 292 4.17 34 56 40 11.64% 44.52% $1,231,303 $4,217 $17,590 2 2