Mason Black

Mason Black

25-Year-Old PitcherSP
San Francisco Giants
2025 Fantasy Outlook
Black is one of the higher-ranked prospects in the San Francisco organization. He is a former third-round pick after impressive work for Lehigh University and has since pitched effectively as a minor league starter with 378 strikeouts in 320 innings of work. His time in the majors in 2024 was a humbling experience, as the league enjoyed a lot of success off him, hanging a 6.44 ERA and a 1.68 WHIP on him over nine games while hitting over .300 on his three primary pitch offerings. The one area of success he had in the majors was his slider, which was a no-hitter on the season as nobody safely batted one of his 39 sliders into play. Black's calling card is a delivery that provides better than average extension, allowing his pitches to play up a bit more like a Joe Ryan, but only his slider grades as an above-average pitch on the pitch modeling. The extension allowed him to get a better than average whiff rate on a four-seamer, which had a .333 average against, so the path to success for Black could very well be a move to the pen to focus on a fastball and slider approach. Simply put, his outcomes since graduating out of Double-A have been challenging between the big-league humbling and the run environments of the PCL. Read Past Outlooks
RANKS
Rest of Season
From Preseason
#362
ADP
Signed a one-year contract with the Giants in March of 2025.
Joining big-league squad
PSan Francisco Giants
July 2, 2025
The Giants recalled Black from Triple-A Sacramento on Wednesday, Justice delos Santos of The San Jose Mercury News reports.
Analysis
Black has been in Triple-A all season and owns a 4.75 ERA with a 1.33 WHIP across 72 innings. He's worked almost exclusively as a starter throughout his professional career, but he'll likely be used in long relief while in San Francisco while replacing Carson Seymour in the bullpen.
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Pitching Stats
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2025 MLB Game Log
2025
2024
2025 MLB Game Log
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Scoring
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2024 MLB Game Log
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Left/Right Pitching Splits
Since 2023
 
 
-19%
BAA vs LHP
2025
No Stats
2024
 
 
-19%
BAA vs LHP
2023
No Stats
BAA Batters K BB H 2B 3B HR
Since 2023vs Left .275 78 13 7 19 2 0 3
Since 2023vs Right .338 91 18 8 27 8 0 4
2025vs Left 0 0 0 0 0 0 0 0
2025vs Right 0 0 0 0 0 0 0 0
2024vs Left .275 78 13 7 19 2 0 3
2024vs Right .338 91 18 8 27 8 0 4
2023vs Left 0 0 0 0 0 0 0 0
2023vs Right 0 0 0 0 0 0 0 0
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Home/Away Pitching Splits
Since 2023
 
 
-35%
ERA at Home
2025
No Stats
2024
 
 
-35%
ERA at Home
2023
No Stats
ERA WHIP IP W L SV K/9 BB/9 HR/9
Since 2023Home 4.96 1.41 16.1 0 2 0 6.6 1.7 2.2
Since 2023Away 7.65 1.90 20.0 1 3 0 8.6 5.4 1.4
2025Home 0 0 0 0 0 0 0 0 0
2025Away 0 0 0 0 0 0 0 0 0
2024Home 4.96 1.41 16.1 0 2 0 6.6 1.7 2.2
2024Away 7.65 1.90 20.0 1 3 0 8.6 5.4 1.4
2023Home 0 0 0 0 0 0 0 0 0
2023Away 0 0 0 0 0 0 0 0 0
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Prospect Rankings History
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Defensive Stats
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Recent RotoWire Articles Featuring Mason Black See More
Recent RotoWire Articles Featuring Mason Black See More
2024 Fantasy Outlook
A sinker/slider righty whose shallow arsenal may limit his upside, Black is knocking on the door of the majors after making 13 starts at Triple-A. The 6-foot-3, 230-pound burgeoning workhorse built up to 123.2 innings while striking out 155 and walking 52. His 94-mph sinker can touch 97 mph and his slider sits in the mid-80s. Black has dabbled with a curveball, cutter and changeup, but he is mostly a two-pitch pitcher. Generally sinker/slider types generate groundballs at high clips, but Black had a 41.7 percent groundball rate at Double-A and a 39.9 percent groundball rate at Triple-A. Fortunately, Oracle Park ranks 27th in Statcast's home run park factor, so a flyball approach isn't the worst thing. Black could be a useful streamer in favorable home starts as a rookie, but he projects as a No. 4 or No. 5 starter long term.
More Fantasy News
Sent to Triple-A
PSan Francisco Giants
March 5, 2025
The Giants optioned Black to Triple-A Sacramento on Wednesday, Susan Slusser of the San Francisco Chronicle reports.
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Optioned to Sacramento
PSan Francisco Giants
September 27, 2024
The Giants optioned Black to Triple-A Sacramento on Friday, Maria I. Guardado of MLB.com reports.
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Issues five walks in loss
PSan Francisco Giants
September 26, 2024
Black (1-5) took the loss against the Diamondbacks on Wednesday, allowing four runs on five hits and five walks over 2.2 innings while striking out three.
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Picks up first career win
PSan Francisco Giants
September 20, 2024
Black (1-4) earned the win Friday at Kansas City, pitching 5.2 scoreless frames while allowing four hits and one walk. He struck out four.
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Allows one earned run in loss
PSan Francisco Giants
September 15, 2024
Black (0-4) took the loss against the Padres on Saturday, allowing two runs (one earned) on six hits and one walk over four innings while striking out two.
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Latest Fantasy Rumors
Might be rotation option soon
PSan Francisco Giants
April 24, 2024
Alex Pavlovic of NBC Sports Bay Area suggests that Black could be an option for San Francisco's rotation in the near future in the wake of Blake Snell's adductor strain.
Analysis
Black missed out on the Giants' season-opening rotation but has a 1.53 ERA, 0.99 WHIP and 20:4 K:BB through four starts at Triple-A Sacramento, which could earn him a promotion soon. San Francisco doesn't necessarily need reinforcements immediately with scheduled off days Thursday and Monday, but a stretch of 16 straight games follows that and will require a full rotation. Snell seems likely to miss more than the 15-day minimum, which could set up Black to make his MLB debut in early May if San Francisco is willing to add him to the 40-man roster.
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