45 players no longer on a 40-man roster, by surname.
A B C D E F G H I J K L M N O P Q R S T U V W Y Z
| Player | Service time | Days | Debut | Last played |
|---|---|---|---|---|
| Glenn Otto Jr. | 2.081 | 425 | 2021 | — |
| Scott Oberg | 4.057 | 745 | 2015 | 2019 |
| Brett Oberholtzer | 2.138 | 482 | 2013 | 2016 |
| Bryce Montes de Oca | 1.033 | 205 | 2022 | — |
| Joseph Odom | 0.147 | 147 | 2020 | 2021 |
| Rougned Odor | 9.058 | 1606 | 2014 | — |
| Jake Odorizzi | 9.043 | 1591 | 2012 | 2022 |
| Trent Oeltjen | 1.079 | 251 | 2009 | 2011 |
| Alexi Ogando | 6.031 | 1063 | 2010 | 2018 |
| Nefi Ogando | 0.122 | 122 | 2015 | 2016 |
| Seunghwan Oh | 3.125 | 641 | 2016 | 2019 |
| Chris Okey | 0.024 | 24 | 2022 | — |
| Jared Oliva | 0.136 | 136 | 2020 | — |
| Edward Olivares | 3.129 | 645 | 2020 | — |
| Andy Oliver | 0.033 | 33 | 2010 | 2011 |
| Héctor Olivera | 0.155 | 155 | 2015 | 2016 |
| Lester Oliveros | 2.064 | 408 | 2011 | 2014 |
| Adam Oller | 1.030 | 202 | 2022 | 2024 |
| Edgar Olmos | 0.083 | 83 | 2013 | 2015 |
| Tyler Olson | 2.107 | 451 | 2015 | 2019 |
| Mike Olt | 1.165 | 337 | 2012 | 2015 |
| Brian Omogrosso | 0.099 | 99 | 2012 | 2013 |
| Logan Ondrusek | 5.083 | 943 | 2010 | 2016 |
| Nate Orf | 0.061 | 61 | 2018 | 2020 |
| Paulo Orlando | 2.144 | 488 | 2015 | 2018 |
| Jonathan Ornelas | 0.105 | 105 | 2023 | — |
| Kaleb Ort | 2.110 | 454 | 2021 | — |
| Jose Ortega | 0.058 | 58 | 2012 | 2014 |
| Oliver Ortega | 2.020 | 364 | 2021 | — |
| Rafael Ortega | 4.096 | 784 | 2012 | — |
| Luis Ortiz | 2.067 | 411 | 2018 | — |
| Luis Ortiz | 2.111 | 455 | 2022 | — |
| Josh Osich | 5.042 | 902 | 2015 | 2021 |
| José Osuna | 3.034 | 550 | 2017 | 2020 |
| Roberto Osuna | 6.000 | 1032 | 2015 | 2020 |
| Corey Oswalt | 1.150 | 322 | 2018 | 2021 |
| Dan Otero | 6.113 | 1145 | 2012 | 2019 |
| Adam Ottavino | 13.104 | 2340 | 2010 | 2025 |
| James Outman | 2.167 | 511 | 2022 | — |
| Connor Overton | 2.031 | 375 | 2021 | 2023 |
| Dillon Overton | 0.070 | 70 | 2016 | 2017 |
| Luis Oviedo | 1.035 | 207 | 2021 | — |
| Henry Owens | 0.099 | 99 | 2015 | — |
| Chris Owings | 8.052 | 1428 | 2013 | 2023 |
| Marcell Ozuna | 13.084 | 2320 | 2013 | — |
172 days credit a full year, so a season adds at most 1.000 no matter how long a player is on a roster. 3.000 years reaches salary arbitration and 6.000 reaches free agency —
what every threshold unlocks.
These figures are estimates reconstructed from public
roster transaction records. They are not official MLB or MLBPA figures —
those are not published. See the
methodology.
Last updated 2026-10-12.
Independent project, not affiliated with or endorsed by Major League
Baseball or the MLBPA.