Venue: Fenway Park — Boston, MA
Scheduled First Pitch: 4:10 PM ET
Television: NESN / NBC Sports Bay Area / MLB.TV**
Weather Forecast — Boston, MA
Fenway is outdoors and weather‑sensitive.
Temperature: 81°F
Wind: 12 mph blowing out to left field
Humidity: 58%
Rain: 5%
Conditions: Hitter‑friendly, especially for right‑handed pull hitters
Wind blowing out to the Monster boosts HR probability for righties (Devers, Story, O’Neill, Chapman).
Injury Report
San Francisco Giants
Logan Webb — OUT (forearm)
LaMonte Wade Jr. — OUT (hamstring)
Mike Yastrzemski — OUT (back)
Camilo Doval — OUT (shoulder)
Michael Conforto — Day‑to‑day (wrist)
Thairo Estrada — Day‑to‑day (quad)
Boston Red Sox
Rafael Devers — Day‑to‑day (ankle) but expected to play
Kenley Jansen — OUT (hip)
Brayan Bello — OUT (elbow)
Masataka Yoshida — OUT (knee)
Ceddanne Rafaela — Day‑to‑day (shoulder)
Boston is missing pitching depth but their lineup is mostly intact. San Francisco is missing multiple core bats and their closer.
Starting Pitching Matchup
SF — RHP Mason Tidwell
(2026 Season: 4–9, 4.87 ERA, 1.36 WHIP) Tidwell is a young arm with flashes of upside but inconsistent command.
Strengths:
Heavy sinker generating 51% ground balls
Slider effective vs right‑handed hitters
Keeps ball in park when ahead in counts
Weaknesses:
Walk rate too high (10.2%)
Struggles vs left‑handed power
Fenway Park historically punishes sinkerballers
Red Sox vs Tidwell profile:
Devers: .302 vs sinkers, .580 SLG
Story: .318 vs RHP sliders
O’Neill: .511 SLG at Fenway in 2026
BOS — LHP Patrick Sandoval
(2026 Season: 8–7, 3.62 ERA, 1.24 WHIP) Sandoval has been Boston’s most reliable starter since Bello’s injury.
Strengths:
Elite changeup (41% whiff rate)
Generates soft contact vs righties
Excellent home splits (3.11 ERA at Fenway)
Giants rank 28th in MLB vs LHP
Weaknesses:
Occasional command lapses
Vulnerable to right‑handed power if changeup isn’t sharp
Giants vs Sandoval profile:
Chapman: .291 vs LHP, .540 SLG
Luciano: improving vs lefties but still inconsistent
Ramos: .214 vs LHP
Key Player Matchups
Rafael Devers vs Mason Tidwell
Devers vs sinkers: elite numbers
Wind blowing out to left Edge: Devers
Matt Chapman vs Patrick Sandoval
Chapman crushes lefties
Sandoval’s changeup neutralizes right‑handed aggression Edge: Slightly Sandoval
Trevor Story vs Tidwell
Story’s pull power plays perfectly at Fenway Edge: Story
Tyler O’Neill vs Giants Bullpen
Giants bullpen ERA: 4.89
O’Neill has 12 HR in last 30 games Edge: O’Neill
Recent Team Form
San Francisco Giants — Last 10 Games: 3–7
Offense averaging 3.4 runs/game
Bullpen collapsing without Doval
Road record: 22–41
Struggling to generate extra‑base hits
Boston Red Sox — Last 10 Games: 6–4
Offense heating up (5.1 runs/game)
Sandoval + bullpen combo stabilizing
Home record: 37–27
Devers + Story + O’Neill carrying lineup
Boston enters significantly hotter.
Series History
2026 Season Series
First meeting of the season
Last season: Red Sox won 2 of 3
Fenway Park: Red Sox have won 7 of last 10 vs SF
Historical Notes
Giants struggle in AL East parks
Fenway’s dimensions punish sinkerballers (Tidwell’s primary pitch)
Betting Trends
San Francisco Giants
2–8 in last 10 road games
1–6 in Tidwell’s last 7 starts
Under is 6–3 in last 9 Giants games
Boston Red Sox
7–3 in last 10 home games
5–1 in Sandoval’s last 6 starts
Red Sox ML has hit in 68% of games as home favorites
Head‑to‑Head Trends
Red Sox have won 7 of last 10 vs SF
Over has hit in 5 of last 7 at Fenway
Game Odds
San Francisco Giants 8.5
Boston Red Sox – 200
Odds Courtesy of Sports Odds Direct as of Friday, August 21, 2026
