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| Name | Team | Age |
| Chief Koslofski | Retired (2031, Age 38) | Died (2064, Age 71) |
| Drafted | Position | Bats/Throws |
| Round 1, Pick 4 (2016) |
SS | B/R |
| League | Option Years
|
Majors Service Time |
| Orlando Cepeda League (AA) | 0 | 15 years (10 games) |
| Total Rating
|
Arm | Range |
| Contact vs R | Contact vs L | Speed |
| Power vs R | Power vs L | Bunting |
| Endurance | Velocity | Control |
| Leadership
|
Mentor vs RHP
|
Mentor vs LHP
|
| Health
|
Injured Days
|
Birthday |
| 0 | 9/24/1993 | |
| WS Rings | WS Appearances | LCS Appearances |
| 0 | 0 | 1 |
| Alt Pos (---) | Alt Pos (---) | Alt Pos (---) |
| (0.0 %) | (0.0 %) | (0.0 %) |
Stats | Splits | Playoffs | Positions | Improvements | Past Skills | Awards | Fielding | Game Log
| Year
|
Team | G | AB | R | H | 2B | 3B | HR | RBI | BB | SO | SB | CS | E | OPS | OBP | SLG | AVG |
| 2016 | BAL | 16 | 61 | 6 | 15 | 3 | 0 | 0 | 4 | 6 | 10 | 2 | 1 | 4 | .609 | .313 | .295 | .246 |
| 2017 | BAL | 140 | 514 | 66 | 152 | 30 | 5 | 18 | 78 | 52 | 104 | 28 | 5 | 36 | .838 | .360 | .479 | .296 |
| 2018 | BAL | 144 | 542 | 91 | 195 | 31 | 10 | 28 | 92 | 57 | 83 | 18 | 12 | 22 | 1.032 | .423 | .609 | .360 |
| 2019 | BAL | 144 | 536 | 89 | 166 | 31 | 7 | 28 | 96 | 48 | 75 | 24 | 9 | 20 | .915 | .365 | .550 | .310 |
| 2020 | BAL | 144 | 552 | 91 | 154 | 23 | 6 | 25 | 100 | 53 | 96 | 34 | 8 | 19 | .821 | .343 | .478 | .279 |
| 2021 | BAL | 130 | 491 | 88 | 146 | 25 | 7 | 22 | 84 | 56 | 85 | 37 | 9 | 14 | .883 | .371 | .511 | .297 |
| 2022 | BAL | 146 | 561 | 104 | 176 | 27 | 9 | 22 | 99 | 61 | 99 | 37 | 6 | 9 | .894 | .383 | .512 | .314 |
| 2023 | BAL | 144 | 581 | 111 | 187 | 33 | 7 | 21 | 112 | 71 | 87 | 29 | 14 | 8 | .903 | .392 | .511 | .322 |
| 2024 | BAL | 144 | 575 | 97 | 179 | 25 | 11 | 33 | 125 | 55 | 101 | 36 | 9 | 11 | .930 | .365 | .565 | .311 |
| 2025 | BAL | 144 | 593 | 108 | 180 | 34 | 7 | 23 | 106 | 55 | 107 | 25 | 12 | 8 | .865 | .364 | .501 | .304 |
| 2026 | BAL | 144 | 576 | 107 | 157 | 31 | 5 | 27 | 85 | 62 | 98 | 31 | 10 | 5 | .831 | .347 | .484 | .273 |
| 2027 | BAL | 144 | 573 | 92 | 158 | 28 | 4 | 21 | 72 | 69 | 104 | 30 | 11 | 8 | .806 | .357 | .449 | .276 |
| 2028 | BAL | 144 | 595 | 85 | 157 | 26 | 6 | 20 | 81 | 59 | 114 | 29 | 21 | 31 | .763 | .335 | .429 | .264 |
| 2029 | BAL | 132 | 539 | 98 | 154 | 26 | 10 | 19 | 72 | 64 | 88 | 22 | 12 | 23 | .839 | .363 | .477 | .286 |
| 2030 | BAL | 142 | 531 | 87 | 138 | 21 | 8 | 11 | 64 | 54 | 109 | 28 | 10 | 31 | .725 | .333 | .392 | .260 |
| 2031 | BAL | 142 | 526 | 65 | 130 | 22 | 4 | 14 | 72 | 50 | 101 | 12 | 10 | 35 | .698 | .314 | .384 | .247 |
| Total | 2144 | 8346 | 1385 | 2444 | 416 | 106 | 332 | 1342 | 872 | 1461 | 422 | 159 | 284 | .848 | .361 | .487 | .293 |
| Date | Transaction |
| 2031-11-01 | Chief Koslofski has retired from the Baltimore Mammoths |
| 2029-08-21 | Chief Koslofski of the Baltimore Mammoths is injured and is expected to be out 15 days. |
| 2021-07-03 | Chief Koslofski of the Kansas City Mammoths is injured and is expected to be out 20 days. |
| 2017-07-07 | Chief Koslofski of the Cleveland Mammoths is injured and is expected to be out 8 days. |
| 2016-09-28 | The Cleveland Mammoths have promoted Chief Koslofski to the major league team. |
| 2016-04-18 | The Cleveland Mammoths have promoted Luis Armstrong to the major league team. The Cleveland Mammoths have sent Chief Koslofski to the minors. |
| 2016-04-01 | The Cleveland Mammoths have promoted Gordon Fletcher to the major league team. The Cleveland Mammoths have promoted Jayhawk Norman to the major league team. The Cleveland Mammoths have promoted Gene Brady to the major league team. The Cleveland Mammoths have promoted Jim Delock to the major league team. The Cleveland Mammoths have promoted Chief Koslofski to the major league team. The Cleveland Mammoths have designated Bill Richards for assignment. |