| 06/03/2019 |
Drafted by the Kansas City Royals in the 2nd round of the 2019 MLB June Amateur Draft from Arizona State University (Tempe, AZ). |
| 03/24/2025 |
Kansas City Royals placed RHP Alec Marsh on the 15-day injured list. Right shoulder impingement. [Auto] |
| 05/02/2025 |
Kansas City Royals transferred RHP Alec Marsh from the 15-day injured list to the 60-day injured list. Right shoulder impingement. [Auto] |
| 08/24/2025 |
Transferred to the 60-day IL. |
| 11/25/2025 |
Received a 1-year contract through automatic renewal worth a total of $760,000. |
| 01/01/2026 |
OSA scouting updated ratings (potential): Stuff: 55 (55); Movement: 50 (50); Control: 55 (60). |
| 07/31/2026 |
Was traded by the Kansas City Royals to the Cincinnati Reds in exchange for SP Chase Petty and RF Kien Vu. |
| 11/09/2026 |
Signed a 1-year contract extension worth a total of $1,580,000 with the Cincinnati Reds organization. |
| 01/01/2027 |
OSA scouting updated ratings (potential): Stuff: 55 (55); Movement: 50 (50); Control: 60 (60). |
| 02/17/2027 |
Unsuccessfully completed training to make one of his poorer pitches more usable at the Cincinnati Reds development complex. |
| 11/11/2027 |
Signed a 1-year contract extension worth a total of $2,920,000 with the Cincinnati Reds organization. |
| 01/01/2028 |
OSA scouting updated ratings (potential): Stuff: 50 (55); Movement: 45 (45); Control: 60 (60). |
| 02/26/2028 |
Injured (allergic reaction),out for 2 days. |
| 07/16/2028 |
Was selected to the 2028 Major League Baseball All-Star Game. |
| 07/24/2028 |
Was traded by the Cincinnati Reds to the Toronto Blue Jays in exchange for SP Dean Kremer. |
| 11/24/2028 |
Received a 1-year contract through arbitration worth a total of $6,696,250. |
| 01/01/2029 |
OSA scouting updated ratings (potential): Stuff: 55 (55); Movement: 50 (50); Control: 60 (60). |
| 02/14/2029 |
Successfully completed training to improve his strength and conditioning at the Toronto Blue Jays development complex. |
| 06/15/2029 |
Was traded by the Toronto Blue Jays to the Los Angeles Dodgers, along with CL Jose Fermin, in exchange for CL Trevor Megill and SP Jared Jones. |
| 09/01/2029 |
Wins the MLB NL Pitcher of the Month Award. |
| 11/05/2029 |
Signed a 1-year contract extension worth a total of $10,100,000 with the Los Angeles Dodgers organization. |
| 01/01/2030 |
OSA scouting updated ratings (potential): Stuff: 50 (50); Movement: 50 (50); Control: 60 (60). |
| 02/13/2030 |
Successfully completed training to make one of his poorer pitches more usable at the Los Angeles Dodgers development complex. |
| 03/15/2030 |
Injured (mild calf strain),day-to-day for one week. |
| 11/25/2030 |
Became a free agent. |
| 12/26/2030 |
Signed a 4-year contract worth a total of $34,400,000 with the Seattle Mariners organization. |
| 01/01/2031 |
OSA scouting updated ratings (potential): Stuff: 50 (50); Movement: 50 (50); Control: 55 (55). |
| 08/11/2031 |
Injured on 08/08/2031, diagnosed with a torn meniscus, will miss 3-4 months. |
| 01/01/2032 |
OSA scouting updated ratings (potential): Stuff: 55 (55); Movement: 50 (50); Control: 55 (55). |
| 01/01/2033 |
OSA scouting updated ratings (potential): Stuff: 50 (50); Movement: 50 (50); Control: 55 (55). |
| 02/16/2033 |
Detrimentally completed training to increase his endurance on the mound at the Seattle Mariners development complex. |
| 06/06/2033 |
Injured (hamstring soreness),day-to-day for 1 day. |
| 07/18/2033 |
Injured (mild hamstring strain),day-to-day for 2 days. |
| 08/25/2033 |
Injured on 08/24/2033, diagnosed with a mild hamstring strain, is day-to-day. |
| 10/20/2033 |
Seattle Mariners voided the team option year for a buyout of $2,200,000. |
| 11/12/2033 |
Became a free agent. |
| 12/27/2033 |
Signed a minor league contract with majors option with the Detroit Tigers organization. |
| 01/01/2034 |
OSA scouting updated ratings (potential): Stuff: 50 (50); Movement: 50 (50); Control: 50 (50). |
| 06/28/2034 |
Released by the Detroit Tigers. |
| 08/18/2034 |
Signed a minor league contract with majors option with the San Francisco Giants organization. |
| 09/14/2034 |
Injured (mild calf strain),day-to-day for 1 day. |
| 10/18/2034 |
Wins the 2034 World Series with the Detroit Tigers. |
| 11/11/2034 |
Became a free agent. |
| 12/12/2034 |
Signed a minor league contract with majors option with the Boston Red Sox organization. |
| 01/01/2035 |
OSA scouting updated ratings (potential): Stuff: 50 (50); Movement: 50 (50); Control: 50 (50). |
| 04/01/2035 |
Injured on 03/29/2035, diagnosed with a stretched elbow ligament, will miss 10 months. |