Peter O'Brien
Pos1B
B/TR/R
Born1990-07-15
Age (2026)36
Contract
No contract data on file. Pre-MLB players and minor-league free agents do not yet have salary projections — entries are added at first 40-man roster placement.
Career Projections (MLE)
All seasons translated to park-neutral MLB-equivalent (MLE) and combined per year. 2026 = actual YTD + projected ROS + total. 2027+ via Advanced Marcel + aging curve.
| Year | Age | Lvl | Team | PA | AB | H | 2B | 3B | HR | BB | SO | HBP | SB | CS | AVG | OBP | SLG | OPS | ISO | BABIP | K% | BB% | wOBA | wRC+ | BAT | RUN | FLD | POS | REP | WAR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2013 | 23 | A+ | 3 teams | 572 | 522 | 127 | 38 | 4 | 22 | 31 | 202 | 6 | 0 | 1 | .243 | .293 | .458 | .751 | .215 | .338 | 35 | 5 | .319 | 103 | +2 | -0 | +0 | -10 | +16 | 0.7 |
| 2014 | 24 | AA | 3 teams | 534 | 506 | 111 | 23 | 2 | 39 | 17 | 188 | 9 | 0 | 0 | .219 | .258 | .504 | .761 | .285 | .256 | 35 | 3 | .315 | 99 | -1 | +0 | +0 | -10 | +15 | 0.5 |
| 2015 | 25 | AAA | 2 teams | 639 | 599 | 127 | 28 | 7 | 22 | 26 | 198 | 8 | 1 | 4 | .212 | .254 | .392 | .647 | .180 | .273 | 31 | 4 | .277 | 70 | -22 | -1 | -1 | -7 | +18 | -1.3 |
| 2016 | 26 | AAA | 2 teams | 501 | 477 | 77 | 14 | 3 | 19 | 19 | 218 | 2 | 2 | 0 | .161 | .197 | .323 | .520 | .161 | .239 | 44 | 4 | .221 | 27 | -41 | +0 | -3 | -5 | +14 | -3.5 |
| 2017 | 27 | AAA | 3 teams | 449 | 416 | 52 | 12 | 1 | 10 | 29 | 216 | 3 | 1 | 0 | .125 | .188 | .231 | .418 | .106 | .220 | 48 | 6 | .186 | 1 | -50 | +0 | +0 | -8 | +13 | -4.6 |
| 2018 | 28 | AA | 4 teams | 559 | 502 | 95 | 19 | 0 | 34 | 48 | 212 | 4 | 1 | 0 | .189 | .265 | .430 | .696 | .241 | .234 | 38 | 9 | .300 | 88 | -8 | +0 | +0 | -10 | +16 | -0.2 |
| 2019 | 29 | AAA | 3 teams | 577 | 525 | 77 | 11 | 0 | 19 | 45 | 282 | 6 | 6 | 3 | .147 | .222 | .276 | .498 | .130 | .258 | 49 | 8 | .217 | 24 | -49 | +0 | -1 | -6 | +16 | -4.1 |
| 2020 | 30 | INTL | Toros del Este | 101 | 89 | 19 | 5 | 0 | 4 | 10 | 37 | 1 | 1 | 0 | .213 | .300 | .404 | .704 | .191 | .306 | 37 | 10 | — | — | — | — | +0 | -2 | — | — |
| 2021 | 31 | INTL | Toros del Este | 116 | 99 | 19 | 8 | 0 | 2 | 15 | 34 | 1 | 0 | 1 | .192 | .304 | .333 | .638 | .141 | .266 | 29 | 13 | — | — | — | — | +0 | -2 | — | — |
| 2022 | 32 | INTL | Criollos de Caguas | 180 | 159 | 34 | 6 | 1 | 5 | 13 | 55 | 4 | 2 | 1 | .214 | .290 | .358 | .648 | .145 | .282 | 31 | 7 | — | — | — | — | +0 | -3 | — | — |
| 2023 | 33 | INTL | Tomateros de Culiacan | 261 | 225 | 47 | 7 | 0 | 12 | 27 | 78 | 9 | 1 | 3 | .209 | .318 | .400 | .718 | .191 | .259 | 30 | 10 | — | — | — | — | +0 | -5 | — | — |
| 2024 | 34 | INTL | Navegantes del Magallanes | 65 | 54 | 7 | 2 | 0 | 3 | 6 | 20 | 4 | 1 | 2 | .130 | .266 | .333 | .599 | .204 | .125 | 31 | 9 | — | — | — | — | +0 | -1 | — | — |
| ▸ Career Totals (MLE all levels + projections) | ||||||||||||||||||||||||||||||
| Career | — | 4554 | 4173 | 792 | 173 | 18 | 191 | 286 | 1740 | 57 | 16 | 15 | .190 | .251 | .377 | .629 | .187 | .264 | 38 | 6 | .223 | 29 | -367 | -3 | -4 | -69 | +129 | -32.0 | ||
| / 162G | — | 650 | 596 | 114 | 25 | 3 | 27 | 41 | 248 | 8 | 2 | 2 | .191 | .253 | .379 | .632 | .188 | .267 | 38 | 6 | .223 | 29 | -52 | -0 | -1 | -10 | +18 | -4.6 | ||
Historical Stats — Raw (Per Stint)
Actual MLB + MiLB stats as they happened, one row per stint at each level. Use this to see what really got recorded; the table above shows MLB-equivalent translations + projections.
| Year | Age | Lvl | Team | PA | AB | H | 2B | 3B | HR | BB | SO | HBP | SB | CS | AVG | OBP | SLG | OPS | ISO | BABIP | K% | BB% | wOBA | wRC+ | BAT | RUN | FLD | POS | REP | WAR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2013 | 23 | A+ | Tampa Yankees | 280 | 253 | 67 | 17 | 3 | 11 | 19 | 76 | 2 | 0 | 1 | .265 | .321 | .486 | .807 | .221 | .326 | 27 | 7 | .346 | 123 | +7 | -0 | — | — | +8 | 1.5 |
| 2013 | 23 | A | Charleston RiverDogs | 226 | 194 | 63 | 22 | 1 | 11 | 22 | 58 | 4 | 0 | 0 | .325 | .405 | .619 | 1.023 | .294 | .397 | 26 | 10 | .430 | 188 | +22 | +0 | — | — | +6 | 2.9 |
| 2013 | 23 | INTL | Scottsdale Scorpions | 66 | 63 | 12 | 2 | 0 | 4 | 2 | 26 | 0 | 0 | 0 | .190 | .215 | .413 | .628 | .222 | .235 | 39 | 3 | .268 | 64 | -3 | +0 | — | — | +2 | -0.1 |
| 2014 | 24 | AA | Mobile BayBears | 308 | 287 | 72 | 14 | 1 | 24 | 17 | 82 | 4 | 0 | 0 | .251 | .302 | .557 | .859 | .307 | .265 | 27 | 6 | .371 | 142 | +15 | +0 | — | — | +9 | 2.4 |
| 2014 | 24 | A+ | Tampa Yankees | 119 | 112 | 36 | 9 | 1 | 10 | 4 | 29 | 2 | 0 | 0 | .321 | .356 | .688 | 1.043 | .366 | .351 | 24 | 3 | .443 | 197 | +13 | +0 | — | — | +3 | 1.7 |
| 2014 | 24 | INTL | Salt River Rafters | 107 | 86 | 22 | 7 | 0 | 5 | 17 | 24 | 3 | 0 | 0 | .256 | .396 | .512 | .908 | .256 | .293 | 22 | 16 | .397 | 162 | +8 | +0 | — | — | +3 | 1.1 |
| 2015 | 25 | AAA | Reno Aces | 534 | 490 | 139 | 35 | 9 | 26 | 31 | 124 | 7 | 1 | 3 | .284 | .335 | .551 | .886 | .267 | .328 | 23 | 6 | .380 | 149 | +29 | -1 | — | — | +15 | 4.4 |
| 2015 | 25 | INTL | Naranjeros de Hermosillo | 105 | 91 | 16 | 4 | 0 | 5 | 13 | 32 | 1 | 0 | 1 | .176 | .286 | .385 | .670 | .209 | .204 | 30 | 12 | .302 | 89 | -1 | -0 | — | — | +3 | 0.1 |
| 2016 | 26 | MLB | Arizona Diamondbacks | 67 | 64 | 9 | 1 | 0 | 5 | 3 | 27 | 0 | 0 | 0 | .141 | .179 | .391 | .570 | .250 | .125 | 40 | 4 | .246 | 47 | -4 | +0 | -3 | -5 | +2 | -1.0 |
| 2016 | 26 | AAA | Reno Aces | 434 | 406 | 103 | 20 | 5 | 24 | 23 | 147 | 2 | 2 | 0 | .254 | .297 | .505 | .802 | .251 | .332 | 34 | 5 | .346 | 123 | +11 | +0 | — | — | +12 | 2.4 |
| 2017 | 27 | AAA | Round Rock Express | 194 | 173 | 30 | 4 | 1 | 6 | 19 | 56 | 1 | 0 | 0 | .173 | .259 | .312 | .571 | .139 | .214 | 29 | 10 | .260 | 57 | -9 | +0 | — | — | +5 | -0.4 |
| 2017 | 27 | AA | Tulsa Drillers | 187 | 168 | 35 | 12 | 0 | 9 | 18 | 84 | 1 | 0 | 0 | .208 | .289 | .440 | .729 | .232 | .347 | 45 | 10 | .321 | 104 | +1 | +0 | — | — | +5 | 0.6 |
| 2017 | 27 | INTL | Yaquis de Obregon | 68 | 55 | 6 | 1 | 1 | 1 | 12 | 22 | 1 | 1 | 0 | .109 | .279 | .218 | .498 | .109 | .156 | 32 | 18 | .247 | 47 | -4 | +0 | — | — | +2 | -0.2 |
| 2018 | 28 | MLB | Miami Marlins | 74 | 66 | 18 | 5 | 0 | 4 | 7 | 22 | 0 | 0 | 0 | .273 | .342 | .530 | .873 | .258 | .341 | 30 | 9 | .375 | 145 | +4 | +0 | +0 | -10 | +2 | -0.4 |
| 2018 | 28 | AAA | New Orleans Baby Cakes | 135 | 112 | 31 | 6 | 0 | 10 | 20 | 40 | 1 | 1 | 0 | .277 | .391 | .598 | .989 | .321 | .328 | 30 | 15 | .421 | 180 | +12 | +0 | — | — | +4 | 1.7 |
| 2018 | 28 | AA | Jacksonville Jumbo Shrimp | 286 | 244 | 46 | 7 | 0 | 20 | 38 | 93 | 3 | 0 | 0 | .189 | .305 | .463 | .768 | .275 | .197 | 33 | 13 | .337 | 116 | +5 | +0 | — | — | +8 | 1.4 |
| 2018 | 28 | INTL | Toros del Este | 64 | 50 | 10 | 0 | 1 | 2 | 13 | 20 | 0 | 0 | 0 | .200 | .365 | .360 | .725 | .160 | .276 | 31 | 20 | .331 | 111 | +1 | +0 | — | — | +2 | 0.3 |
| 2019 | 29 | MLB | Miami Marlins | 47 | 42 | 7 | 1 | 0 | 1 | 4 | 19 | 1 | 1 | 0 | .167 | .255 | .262 | .517 | .095 | .273 | 40 | 9 | .243 | 44 | -3 | +0 | -1 | -6 | +1 | -0.9 |
| 2019 | 29 | AAA | New Orleans Baby Cakes | 291 | 255 | 56 | 8 | 0 | 17 | 36 | 107 | 0 | 0 | 1 | .220 | .316 | .451 | .767 | .231 | .298 | 37 | 12 | .340 | 118 | +6 | -0 | — | — | +8 | 1.4 |
| 2019 | 29 | INTL | Dominican Republic | 239 | 192 | 49 | 11 | 2 | 10 | 41 | 63 | 5 | 5 | 2 | .255 | .399 | .490 | .889 | .234 | .325 | 26 | 17 | .393 | 159 | +16 | +0 | — | — | +7 | 2.3 |
| 2020 | 30 | INTL | Toros del Este | 101 | 89 | 19 | 5 | 0 | 4 | 10 | 37 | 1 | 1 | 0 | .213 | .300 | .404 | .704 | .191 | .306 | 37 | 10 | .312 | 97 | -0 | +0 | — | — | +3 | 0.3 |
| 2021 | 31 | INTL | Toros del Este | 116 | 99 | 19 | 8 | 0 | 2 | 15 | 34 | 1 | 0 | 1 | .192 | .304 | .333 | .638 | .141 | .266 | 29 | 13 | .291 | 81 | -2 | -0 | — | — | +3 | 0.0 |
| 2022 | 32 | INTL | Criollos de Caguas | 180 | 159 | 34 | 6 | 1 | 5 | 13 | 55 | 4 | 2 | 1 | .214 | .290 | .358 | .648 | .145 | .282 | 31 | 7 | .287 | 78 | -5 | +0 | — | — | +5 | 0.1 |
| 2023 | 33 | INTL | Tomateros de Culiacan | 261 | 225 | 47 | 7 | 0 | 12 | 27 | 78 | 9 | 1 | 3 | .209 | .318 | .400 | .718 | .191 | .259 | 30 | 10 | .325 | 107 | +2 | -1 | — | — | +7 | 0.9 |
| 2024 | 34 | INTL | Navegantes del Magallanes | 65 | 54 | 7 | 2 | 0 | 3 | 6 | 20 | 4 | 1 | 2 | .130 | .266 | .333 | .599 | .204 | .125 | 31 | 9 | .273 | 67 | -2 | -1 | — | — | +2 | -0.1 |
| ▸ Career Totals (raw MLB only — historical actual) | ||||||||||||||||||||||||||||||
| MLB Career | — | 188 | 172 | 34 | 7 | 0 | 10 | 14 | 68 | 1 | 1 | 0 | .198 | .262 | .413 | .675 | .215 | .253 | 36 | 7 | .296 | 85 | -3 | +0 | -3 | -22 | +5 | -2.3 | ||