| 07/17/2022 |
Drafted by the Tampa Bay Rays in the 19th round of the 2022 MLB June Amateur Draft from Stanford University (Palo Alto, CA). Did not sign. |
| 07/10/2023 |
Drafted by the St. Louis Cardinals in the 4th round of the 2023 MLB June Amateur Draft from Stanford University (Palo Alto, CA). |
| 04/13/2025 |
Memphis Redbirds placed LHP Quinn Mathews on the 7-day injured list. [Auto] |
| 05/19/2025 |
Memphis Redbirds sent LHP Quinn Mathews on a rehab assignment to FCL Cardinals. [Auto] |
| 05/21/2025 |
Memphis Redbirds sent LHP Quinn Mathews on a rehab assignment to Palm Beach Cardinals. [Auto] |
| 05/31/2025 |
Memphis Redbirds activated LHP Quinn Mathews from the 7-day injured list. [Auto] |
| 11/25/2025 |
Received a 1-year contract through automatic renewal worth a total of $740,000. |
| 01/01/2026 |
OSA scouting updated ratings (potential): Stuff: 55 (55); Movement: 50 (50); Control: 45 (45). |
| 02/18/2026 |
Unsuccessfully completed training to make one of his poorer pitches more usable at the St. Louis Cardinals development complex. |
| 11/28/2026 |
Received a 1-year contract through automatic renewal worth a total of $740,000. |
| 01/01/2027 |
OSA scouting updated ratings (potential): Stuff: 55 (55); Movement: 50 (50); Control: 45 (45). |
| 02/17/2027 |
Detrimentally completed training to increase his velocity at the St. Louis Cardinals development complex. |
| 07/13/2027 |
Injured (neck stiffness),day-to-day for 1 day. |
| 10/28/2027 |
Wins the 2027 IL Outstanding Pitcher Award. |
| 11/30/2027 |
Received a 1-year contract through automatic renewal worth a total of $740,000. |
| 01/01/2028 |
OSA scouting updated ratings (potential): Stuff: 55 (55); Movement: 50 (50); Control: 40 (40). |
| 09/22/2028 |
Injured (flu),out for one week. |
| 11/26/2028 |
Received a 1-year contract through automatic renewal worth a total of $740,000. |
| 01/01/2029 |
OSA scouting updated ratings (potential): Stuff: 55 (55); Movement: 50 (50); Control: 40 (40). |
| 03/12/2029 |
Outstandingly completed training to improve his secondary pitch at the St. Louis Cardinals development complex. |
| 03/22/2029 |
Designated for assignment and placed on waivers by the St. Louis Cardinals. |
| 05/29/2029 |
Injured on 05/27/2029, diagnosed with a herniated disc, will miss 3 weeks. |
| 06/21/2029 |
Injured (mild calf strain),day-to-day for 5 days. |
| 09/10/2029 |
Injured (mild hamstring strain),day-to-day for 1 day. |
| 11/06/2029 |
Designated for assignment and placed on waivers by the St. Louis Cardinals. |
| 12/22/2029 |
Drafted in the rule 5 draft (Round 1 , Pick 5, 5th overall Pick) by the Pittsburgh Pirates from the St. Louis Cardinals. |
| 01/01/2030 |
OSA scouting updated ratings (potential): Stuff: 55 (60); Movement: 50 (50); Control: 40 (40). |
| 11/06/2030 |
Signed a 1-year contract extension worth a total of $1,460,000 with the Pittsburgh Pirates organization. |
| 01/01/2031 |
OSA scouting updated ratings (potential): Stuff: 60 (60); Movement: 50 (50); Control: 40 (40). |
| 11/02/2031 |
Signed a 1-year contract extension worth a total of $2,480,000 with the Pittsburgh Pirates organization. |
| 12/04/2031 |
Was traded by the Pittsburgh Pirates to the Washington Nationals in exchange for C Daniel Hernandez and RP Alexis Leon. |
| 01/01/2032 |
OSA scouting updated ratings (potential): Stuff: 55 (55); Movement: 50 (50); Control: 40 (40). |
| 11/06/2032 |
Signed a 1-year contract extension worth a total of $3,840,000 with the Washington Nationals organization. |
| 01/01/2033 |
OSA scouting updated ratings (potential): Stuff: 55 (55); Movement: 50 (50); Control: 40 (40). |
| 04/17/2033 |
Injured (forearm soreness),day-to-day for 4 days. |
| 06/15/2033 |
Injured (herniated disc (neck)),out for 4 weeks. |
| 08/20/2033 |
Injured (mild abdominal strain),day-to-day for 1 day. |
| 10/24/2033 |
Signed a 1-year contract extension worth a total of $5,000,000 with the Washington Nationals organization. |
| 01/01/2034 |
OSA scouting updated ratings (potential): Stuff: 55 (55); Movement: 50 (50); Control: 40 (40). |
| 09/18/2034 |
Injured (flu-like symptoms),day-to-day for 4 days. |
| 11/11/2034 |
Became a free agent. |
| 12/12/2034 |
Signed a minor league contract with majors option with the Philadelphia Phillies organization. |
| 01/01/2035 |
OSA scouting updated ratings (potential): Stuff: 55 (55); Movement: 50 (50); Control: 45 (45). |
| 06/04/2035 |
Injured (tender shoulder),day-to-day for one week. |
| 08/15/2035 |
Injured (neck stiffness),day-to-day for one week. |
| 11/07/2035 |
Became a free agent. |
| 12/10/2035 |
Signed a 1-year contract worth a total of $5,500,000 with the Los Angeles Dodgers organization. |
| 01/01/2036 |
OSA scouting updated ratings (potential): Stuff: 55 (55); Movement: 50 (50); Control: 45 (45). |
| 04/22/2036 |
Injured (herniated disc (neck)),out for 2 weeks. |