Peter O'Brien
Pos1B
B/TR/R
Born1990-07-15
Age (2026)36
Career Stats + Projections
Viewactual = stats as recorded (prior seasons combined) + projected real-world MLB lines · MLE = level/park-neutral translations
Methodology▸ how these numbers are built
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 | MLB% | 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 | 519 | 133 | 41 | 4 | 23 | 34 | 197 | 6 | 0 | 1 | 256 | 309 | 484 | 793 | 227 | 353 | 34 | 6 | 337 | 116 | — | — | — | — | — | — |
| 2013 | 23 | A+ | 3 teams | — | 572 | 510 | 142 | 41 | 4 | 26 | 43 | 160 | 6 | 0 | 1 | 278 | 342 | 527 | 869 | 249 | 344 | 28 | 8 | 370 | 142 | — | — | — | — | — | — |
| 2014 | 24 | AA | 3 teams | — | 534 | 506 | 114 | 23 | 2 | 43 | 17 | 191 | 9 | 0 | 0 | 225 | 263 | 534 | 797 | 308 | 259 | 36 | 3 | 329 | 110 | — | — | — | — | — | — |
| 2014 | 24 | AA | 3 teams | — | 534 | 485 | 130 | 30 | 2 | 39 | 38 | 135 | 9 | 0 | 0 | 268 | 333 | 579 | 912 | 311 | 291 | 25 | 7 | 392 | 158 | — | — | — | — | — | — |
| 2015 | 25 | AAA | 2 teams | — | 639 | 598 | 125 | 26 | 6 | 21 | 27 | 204 | 8 | 1 | 4 | 209 | 253 | 378 | 631 | 169 | 275 | 32 | 4 | 271 | 66 | — | — | — | — | — | — |
| 2015 | 25 | AAA | 2 teams | — | 639 | 581 | 155 | 39 | 9 | 31 | 44 | 156 | 8 | 1 | 4 | 267 | 327 | 525 | 852 | 258 | 311 | 24 | 7 | 367 | 139 | — | — | — | — | — | — |
| 2016 | 26 | AAA | 2 teams | — | 501 | 476 | 73 | 13 | 3 | 18 | 20 | 220 | 2 | 2 | 0 | 153 | 191 | 307 | 497 | 153 | 228 | 44 | 4 | 211 | 19 | — | — | — | — | — | — |
| 2016 | 26 | AAA | 2 teams | — | 501 | 470 | 112 | 21 | 5 | 29 | 26 | 174 | 2 | 2 | 0 | 238 | 281 | 489 | 770 | 251 | 307 | 35 | 5 | 332 | 113 | — | — | — | — | — | — |
| 2017 | 27 | AAA | 3 teams | — | 449 | 417 | 48 | 11 | 1 | 8 | 28 | 220 | 3 | 1 | 0 | 115 | 176 | 204 | 380 | 89 | 211 | 49 | 6 | 173 | -9 | — | — | — | — | — | — |
| 2017 | 27 | AAA | 3 teams | — | 449 | 396 | 71 | 17 | 2 | 16 | 49 | 162 | 3 | 1 | 0 | 179 | 275 | 354 | 628 | 174 | 251 | 36 | 11 | 284 | 75 | — | — | — | — | — | — |
| 2018 | 28 | AA | 4 teams | — | 559 | 505 | 99 | 22 | 0 | 35 | 45 | 200 | 4 | 1 | 0 | 196 | 267 | 448 | 715 | 251 | 233 | 36 | 8 | 306 | 92 | — | — | — | — | — | — |
| 2018 | 28 | AA | 4 teams | — | 559 | 472 | 105 | 18 | 1 | 36 | 78 | 175 | 4 | 1 | 0 | 222 | 338 | 494 | 831 | 271 | 259 | 31 | 14 | 362 | 135 | — | — | — | — | — | — |
| 2019 | 29 | AAA | 3 teams | — | 577 | 528 | 75 | 11 | 0 | 17 | 42 | 295 | 6 | 6 | 3 | 142 | 214 | 259 | 473 | 117 | 267 | 51 | 7 | 207 | 17 | — | — | — | — | — | — |
| 2019 | 29 | AAA | 3 teams | — | 577 | 489 | 112 | 20 | 2 | 28 | 81 | 189 | 6 | 6 | 3 | 229 | 345 | 450 | 795 | 221 | 308 | 33 | 14 | 354 | 129 | — | — | — | — | — | — |
| 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 | — | — | — | — | — | — | — | — |
| 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 | — | — | — | — | — | — |
| 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 | — | — | — | — | — | — | — | — |
| 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 | — | — | — | — | — | — |
| 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 | — | — | — | — | — | — | — | — |
| 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 | — | — | — | — | — | — |
| 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 | — | — | — | — | — | — | — | — |
| 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 | — | — | — | — | — | — |
| 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 | — | — | — | — | — | — | — | — |
| 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 | — | — | — | — | — | — |
| ▸ Career Totals | |||||||||||||||||||||||||||||||
| 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 | ||
| / 162G | — | — | 650 | 595 | 118 | 24 | 0 | 35 | 48 | 235 | 3 | 3 | 0 | 198 | 261 | 415 | 676 | 217 | 253 | 36 | 7 | 296 | 85 | -11 | +1 | -11 | -74 | +18 | -7.9 | ||
| Career | — | — | 4554 | 4175 | 793 | 175 | 17 | 191 | 284 | 1751 | 57 | 16 | 15 | 190 | 251 | 377 | 628 | 187 | 265 | 38 | 6 | 223 | 29 | -366 | -3 | -4 | -53 | +129 | -30.3 | ||
| / 162G | — | — | 650 | 596 | 113 | 25 | 2 | 27 | 41 | 250 | 8 | 2 | 2 | 190 | 251 | 374 | 625 | 185 | 265 | 38 | 6 | 223 | 29 | -52 | -0 | -1 | -8 | +18 | -4.3 | ||
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 | MLB% | 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 | 95 | 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 | ||