2024 Stats
W-L
1-0
ERA
4.42
WHIP
1.42
K
18
SV
0
2025 Projections
Optioned to Triple-A
The Diamondbacks optioned Walston to Triple-A Reno on Thursday.
ANALYSIS
Since rejoining the D-backs' bullpen Sept. 15, Walston has surrendered eight runs (five earned) over just 5.2 innings while striking out seven batters and walking one. He and Yilber Diaz will end up as Arizona's roster casualties following the activation of Ryne Nelson (shoulder) and promotion of Alek Thomas, and the 23-year-old Walston likely won't make it back to the majors during the final series of the season this weekend.
Since rejoining the D-backs' bullpen Sept. 15, Walston has surrendered eight runs (five earned) over just 5.2 innings while striking out seven batters and walking one. He and Yilber Diaz will end up as Arizona's roster casualties following the activation of Ryne Nelson (shoulder) and promotion of Alek Thomas, and the 23-year-old Walston likely won't make it back to the majors during the final series of the season this weekend.
Pitching Stats
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2024
Minor League Game Log
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Pitching Appearances Breakdown
Average Pitch Count
49
Last 10 Games
49
Last 5 Games
40
How many pitches does Blake Walston generally throw?
1-10
11-20
21-30
31-40
41-50
51-60
61-70
71-80
81-90
91-100
101-110
111-120
121+
What part of the game does Blake Walston generally pitch?
1st
2nd
3rd
4th
5th
6th
7th
8th
9th
Extra
% Games Reaching Innings Threshold
% Games By Number of Innings Pitched
Left/Right Pitching Splits
Since 2022
-18%
BAA vs RHP
2024
-18%
BAA vs RHP
| BAA | K | BB | H | HR | ||||
|---|---|---|---|---|---|---|---|---|
| Since 2022vs Left | .267 | 2 | 2 | 4 | 1 | |||
| Since 2022vs Right | .218 | 16 | 8 | 12 | 3 | |||
| 2024vs Left | .267 | 2 | 2 | 4 | 1 | |||
| 2024vs Right | .218 | 16 | 8 | 12 | 3 | |||
| 2023vs Left | 0 | 0 | 0 | 0 | 0 | |||
| 2023vs Right | 0 | 0 | 0 | 0 | 0 | |||
| 2022vs Left | 0 | 0 | 0 | 0 | 0 | |||
| 2022vs Right | 0 | 0 | 0 | 0 | 0 | |||
| More Splits→ | View More Split Stats | |||||||
Home/Away Pitching Splits
Since 2022
-57%
ERA at Home
2024
-57%
ERA at Home
| ERA | WHIP | IP | K/9 | BB/9 | |||||
|---|---|---|---|---|---|---|---|---|---|
| Since 2022Home | 3.86 | 1.35 | 16.1 | 7.7 | 5.0 | ||||
| Since 2022Away | 9.00 | 2.00 | 2.0 | 18.0 | 4.5 | ||||
| 2024Home | 3.86 | 1.35 | 16.1 | 7.7 | 5.0 | ||||
| 2024Away | 9.00 | 2.00 | 2.0 | 18.0 | 4.5 | ||||
| 2023Home | 0 | 0 | 0 | 0 | 0 | ||||
| 2023Away | 0 | 0 | 0 | 0 | 0 | ||||
| 2022Home | 0 | 0 | 0 | 0 | 0 | ||||
| 2022Away | 0 | 0 | 0 | 0 | 0 | ||||
| More Splits→ | View More Split Stats | ||||||||
Stat Review
How does Blake Walston compare to other relievers?
This section compares his stats with all relief pitcher seasons from the previous three seasons (minimum 30 innings)*. The bar represents the player's percentile rank. For example, if the bar is halfway across, then the player falls into the 50th percentile for that stat and it would be considered average.
* Exit Velocity, Barrels/BBE %, Balls Hit 95+ MPH %, and Spin Rate are benchmarked against 2019 data (min 30 IP). See here for more exit velocity/barrels stats plus an explanation of current limitations with that data set.
* Exit Velocity, Barrels/BBE %, Balls Hit 95+ MPH %, and Spin Rate are benchmarked against 2019 data (min 30 IP). See here for more exit velocity/barrels stats plus an explanation of current limitations with that data set.
K/BB
1.80K/9
8.8BB/9
4.9HR/9
2.0Fastball
91.3 mphERA
4.42WHIP
1.42BABIP
.263GB/FB
0.90Left On Base
68.6%Exit Velocity
82.5 mphBarrels/BBE
4.4%Spin Rate
2106 rpmBalls Hit 95+ MPH
22.1%Swinging Strike
9.6%Prospect Rankings History
Advanced Pitching Stats
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Defensive Stats
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Stats Vs Today's Lineup
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Past Fantasy Outlooks
2021
2020
The youngest player at Arizona's alternate training site, Walston proved up to the challenge, showing an improved changeup and improved command against older hitters. A 6-foot-5, 195-pound southpaw, there's still some projection possible with Walston, even though his velocity already ticked up from the low-90s to the mid-90s after signing for $2.45 million in 2019. His plus slider is arguably his best pitch, and it is important that his changeup and curveball continue to improve in the coming years. He won't turn 20 until late June, so it's too early to say anything definitive with regards to his floor or ceiling. That said, athletic, tall lefties with mid-90s fastball velocity and good command of a four-pitch mix are very rare. He should spend the year at Low-A and High-A, where going deep into starts and building up his workload will be a priority.
More Fantasy News
Promoted Sunday
The Diamondbacks recalled Walston from Triple-A Reno on Sunday.
ANALYSIS
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Comes off IL, optioned to Reno
The Diamondbacks reinstated Walston (elbow) from the 15-day injured list Monday and optioned him to Triple-A Reno.
ANALYSIS
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Makes first rehab start
Walston (elbow) struck out five and allowed two hits and no walks over 3.2 innings in a rehab start for Triple-A Reno on Sunday.
ANALYSIS
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Faces hitters
Walston (elbow) threw live batting practice Friday, Jesse Friedman of GoPHNX.com reports.
ANALYSIS
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Trending toward August return
Walston (elbow) isn't expected to return from the 15-day injured list until sometime in August, Theo Mackie of The Arizona Republic reports.
ANALYSIS
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Latest Fantasy Rumors
Likely to open at Triple-A
Walston is expected to begin the 2025 season in Triple-A Reno's starting rotation, reports Jack Sommers of SI.com.
ANALYSIS
The 23-year-old received his first taste of the majors in 2024 and had a 4.42 ERA, 1.42 WHIP and 18:10 K:BB over 18.1 innings. Walston maintained his rookie eligibility for 2025 and should make some starts for Arizona at some point, but he isn't likely to make the Opening Day roster.
The 23-year-old received his first taste of the majors in 2024 and had a 4.42 ERA, 1.42 WHIP and 18:10 K:BB over 18.1 innings. Walston maintained his rookie eligibility for 2025 and should make some starts for Arizona at some point, but he isn't likely to make the Opening Day roster.