| 06/08/2010 |
Drafted by the Florida Marlins in the 23rd round of the 2010 MLB June Amateur Draft from South Dakota State University (Brookings, SD). Did not sign. |
| 06/07/2011 |
Drafted by the Oakland Athletics in the 7th round of the 2011 MLB June Amateur Draft from South Dakota State University (Brookings, SD). |
| 01/16/2013 |
Traded by the Oakland Athletics to the Washington Nationals as part of a 3-team trade: The Oakland Athletics received C John Jaso (SEA). The Seattle Mariners received OF Michael Morse (WSH). The Washington Nationals received P A.J. Cole (OAK), P Blake Treinen (OAK), and a PTBNL (P Ian Krol (OAK) - 03/20/2013). |
| 07/16/2017 |
Was traded by the Washington Nationals to the Oakland Athletics, along with P Jesus Luzardo and 3B Sheldon Neuse, in exchange for P Ryan Madson and P Sean Doolittle. |
| 07/08/2018 |
Was selected to the 2018 Major League Baseball All-Star Game. |
| 02/02/2019 |
Received a 1-year contract worth a total of $6,400,000 through arbitration. |
| 12/02/2019 |
Granted Free Agency. |
| 12/15/2019 |
Signed as a Free Agent with the Los Angeles Dodgers. |
| 10/27/2020 |
Wins the 2020 World Series with the Los Angeles Dodgers. |
| 10/28/2020 |
Granted Free Agency. |
| 01/05/2021 |
Signed as a Free Agent with the Los Angeles Dodgers. |
| 04/23/2024 |
Los Angeles Dodgers sent RHP Blake Treinen on a rehab assignment to Oklahoma City Baseball Club. [Auto] |
| 05/05/2024 |
Los Angeles Dodgers activated RHP Blake Treinen from the 15-day injured list. [Auto] |
| 08/05/2024 |
Los Angeles Dodgers placed RHP Blake Treinen on the 15-day injured list. left hip discomfort. [Auto] |
| 08/17/2024 |
Los Angeles Dodgers sent RHP Blake Treinen on a rehab assignment to Tulsa Drillers. [Auto] |
| 08/21/2024 |
Los Angeles Dodgers activated RHP Blake Treinen from the 15-day injured list. [Auto] |
| 10/31/2024 |
RHP Blake Treinen elected free agency. [Auto] |
| 01/01/2025 |
OSA scouting updated ratings (potential): Stuff: 65 (65); Movement: 60 (60); Control: 60 (60). |
| 01/01/2025 |
OSA scouting updated ratings (potential): Stuff: 65 (65); Movement: 60 (60); Control: 60 (60). |