On MLB 40-man: YES
Acquired: Drafted 1st Rd (34) '19
| Fri 4/25 | Sat 4/26 | Sun 4/27 |
|---|---|---|
| ATL 9:40 PM EDT | ATL 8:10 PM EDT | ATL 4:10 PM EDT |
Positions
RP
2026 Earned Positions
RP
All Leagues
Average $1.33
Median $1.00
FanGraphs Points
Average $1.29
Median $1.00
All Leagues
Average $1.10
Median $1.00
FanGraphs Points
Average $1.00
Median $1.00
Roster%
2.75%
Change
7Day
2.75%
30Day
2.45%
2025 OPL Round 1
OPL Roster%
0.00%
OPL Average Salary
$0.00
April 20, 2025 9:17 PM : Jameson earned a save with a scoreless inning during Sunday's extra-innings win over the Cubs.
Analysis: Jameson was promoted from Triple-A Reno on Saturday and secured a save in his season debut with the Diamondbacks. It was his first MLB appearance since July 6, 2023 after missing the entire 2024 campaign while recovering from Tommy John surgery. Jameson likely won't see many save opportunities out of Arizona's bullpen, but with A.J. Puk (elbow) and Kevin Ginkel (shoulder) both currently on the shelf, the right-hander could work his way into a high-leverage role.
MLB Stats
Pitching
| Year | Team | G | GS | IP | SV | HLD | K | H | BB | HBP | HR | P/IP | Pts |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2022 | ARI | 4 | 4 | 24.1 | 0 | 0 | 24 | 20 | 7 | 1 | 2 | 5.24 | 127.47 |
| 2023 | ARI | 15 | 3 | 40.2 | 1 | 1 | 37 | 40 | 18 | 1 | 6 | 3.67 | 149.13 |
| 2025 | ARI | 2 | 0 | 2.0 | 1 | 0 | 0 | 3 | 1 | 0 | 0 | 4.5 | 9.00 |
MILB Stats
Pitching
| Year | Team | G | GS | IP | SV | HLD | K | H | BB | HBP | HR | P/IP | Pts |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2019 | ARI (A-) | 8 | 8 | 11.2 | 0 | 0 | 12 | 14 | 9 | 1 | 1 | 2.71 | 31.63 |
| 2021 | ARI (A+) | 13 | 12 | 64.1 | 0 | 0 | 77 | 60 | 18 | 4 | 9 | 4.62 | 297.37 |
| 2021 | ARI (AA) | 8 | 8 | 46.1 | 0 | 0 | 68 | 38 | 18 | 4 | 6 | 5.19 | 240.27 |
| 2022 | ARI (AA) | 4 | 4 | 18.2 | 0 | 0 | 23 | 13 | 4 | 1 | 0 | 7.25 | 135.33 |
| 2022 | ARI (AAA) | 22 | 21 | 114.0 | 0 | 0 | 109 | 139 | 42 | 6 | 21 | 2.61 | 297.90 |
| 2023 | ARI (AAA) | 5 | 5 | 28.0 | 0 | 0 | 24 | 29 | 11 | 2 | 2 | 4.15 | 116.20 |
| 2025 | ARI (AAA) | 7 | 0 | 6.2 | 0 | 1 | 10 | 8 | 0 | 0 | 2 | 4.19 | 27.93 |
Recent Games
Last 10 MLB Games
| Date | Team | Opponent | GS | Win | Save | Hold | IP | TBF | R | ER | H | K | BB | HBP | HR | Pts |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Apr 23, 2025 | ARI | TBR | 0 | 0 | 0 | 0 | 1.0 | 6 | 2 | 1 | 3 | 0 | 1 | 0 | 0 | -3.40 |
| Apr 20, 2025 | ARI | @CHC | 0 | 0 | 1 | 0 | 1.0 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 12.40 |
| Jul 6, 2023 | ARI | NYM | 0 | 0 | 0 | 0 | 3.0 | 14 | 2 | 2 | 5 | 2 | 1 | 1 | 1 | -5.10 |
| Jun 29, 2023 | ARI | TBR | 0 | 0 | 0 | 0 | 3.0 | 10 | 0 | 0 | 1 | 4 | 1 | 0 | 0 | 24.60 |
| Jun 23, 2023 | ARI | @SFG | 0 | 0 | 0 | 0 | 2.0 | 10 | 0 | 0 | 4 | 2 | 0 | 0 | 0 | 8.40 |
| Jun 18, 2023 | ARI | CLE | 0 | 0 | 0 | 0 | 2.0 | 6 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 16.80 |
| Jun 15, 2023 | ARI | PHI | 0 | 0 | 0 | 0 | 2.1 | 9 | 0 | 0 | 2 | 3 | 0 | 0 | 0 | 18.07 |
| Jun 12, 2023 | ARI | PHI | 0 | 1 | 0 | 0 | 2.0 | 9 | 2 | 2 | 1 | 1 | 2 | 0 | 0 | 8.20 |
| Jun 9, 2023 | ARI | @DET | 0 | 0 | 0 | 0 | 2.1 | 10 | 2 | 2 | 3 | 1 | 0 | 0 | 1 | -0.83 |
| Jun 3, 2023 | ARI | ATL | 0 | 0 | 0 | 0 | 3.1 | 14 | 2 | 2 | 5 | 1 | 1 | 0 | 1 | -1.63 |
| Totals | 0 | 1 | 1 | 0 | 22.0 | 90 | 10 | 9 | 24 | 15 | 6 | 1 | 3 | 77.50 | ||
Last 10 MILB Games
| Date | Level | Team | Opponent | GS | Win | Save | IP | TBF | R | ER | H | K | BB | HBP | HR |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Apr 17, 2025 | AAA | RNO | RR | 0 | 0 | 0 | 1.0 | 4 | 1 | 1 | 1 | 0 | 0 | 0 | 1 |
| Apr 13, 2025 | AAA | RNO | @SL | 0 | 0 | 0 | 0.2 | 2 | 0 | 0 | 0 | 1 | 0 | 0 | 0 |
| Apr 10, 2025 | AAA | RNO | @SL | 0 | 0 | 0 | 1.0 | 3 | 0 | 0 | 0 | 3 | 0 | 0 | 0 |
| Apr 8, 2025 | AAA | RNO | @SL | 0 | 0 | 0 | 1.0 | 5 | 0 | 0 | 2 | 1 | 0 | 0 | 0 |
| Apr 5, 2025 | AAA | RNO | TAC | 0 | 0 | 0 | 1.0 | 4 | 0 | 0 | 1 | 1 | 0 | 0 | 0 |
| Apr 2, 2025 | AAA | RNO | TAC | 0 | 0 | 0 | 1.0 | 5 | 0 | 0 | 2 | 2 | 0 | 0 | 0 |
| Mar 28, 2025 | AAA | RNO | @LV | 0 | 0 | 0 | 1.0 | 5 | 1 | 1 | 2 | 2 | 0 | 0 | 1 |
| May 23, 2023 | AAA | RNO | @ELP | 1 | 1 | 0 | 6.0 | 29 | 5 | 5 | 9 | 4 | 2 | 0 | 0 |
| May 17, 2023 | AAA | RNO | SAC | 1 | 1 | 0 | 6.0 | 24 | 2 | 2 | 5 | 7 | 0 | 1 | 1 |
| May 11, 2023 | AAA | RNO | @TAC | 1 | 1 | 0 | 6.0 | 23 | 1 | 1 | 2 | 5 | 3 | 0 | 0 |
| Totals | 3 | 3 | 0 | 24.2 | 104 | 10 | 10 | 24 | 26 | 5 | 1 | 3 | |||
Avg Salary & Roster%
Last 30 days
2026 Position Eligibility Progress
To gain eligibility, a player must have 5 GS or 10 G at a position in the majors, or 20 G at a position in the minors.
Transaction History
| Date | Transaction Type | Team | Salary |
|---|---|---|---|
| March 22, 2023 10:04 PM | add | Kinki Koshien | $1 |
| July 8, 2023 3:36 PM | move | RIP Bob Uecker (from Kinki Koshien) | $1 |
| October 12, 2023 11:57 AM | increase | RIP Bob Uecker | $3 |
| January 21, 2024 10:50 AM | cut | RIP Bob Uecker | $0 |