The Boston Red Sox (68-59) open a three-game series against the San Francisco Giants (52-75) tonight at Fenway Park. Boston enters the weekend in control of the second Wild Card position in the American League. The Giants are riding out a disappointing season. Only the Rockies have fewer wins on the campaign than San Francisco’s 52.
The issues for the Giants are on the mound as well as at the plate. The offense has scored the fewest runs in the National League while only the pitching staffs of the Nationals, Reds, and Pirates have allowed more runs. That’s a bad combination. In losing two of three to the Guardians in Cleveland earlier this week, San Francisco scored a total of four runs and allowed a whopping 14. The Red Sox have treaded water of late but did take two of three against the Diamondbacks earlier this week. Boston scored 26 runs over the three games and allowed 12 including seven in a loss in Wednesday’s series finale.
Fans at Fenway will be treated tonight as they get to witness a couple of aces on the mound. San Francisco hands the ball to Logan Webb (8-7, 3.50 ERA) while Sonny Gray (15-3, 2.65 ERA) takes the mound for Boston. Webb comes into tonight having allowed one run or fewer in each of his last three starts. However, there is some uncertainty after he reportedly exited his August 15 start with minor tightness following a comebacker. Gray has been one of the best pitchers in the American League this season. He has been particularly sharp lately, compiling a 2.72 ERA over his last seven starts. His ability to limit walks and miss bats has kept him on the perimeter of the AL Cy Young conversation.
No doubt former Red Sox star Rafael Devers will be a major storyline this weekend as he returns to Fenway Park wearing a Giants uniform after last year’s blockbuster trade.
Lets dive further into today’s game and find a sweat or two.
We’ve got all the info and analysis you need to know ahead of the game, including the latest info on the how to catch first pitch, odds, recent team performance, player stats, and of course, our predictions, picks & best bets for the game from our modeling tools and staff of experts.
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Game Details and How to Watch: Giants vs. Red Sox
- Date: Friday, August 21, 2026
- Time: 7:10PM EST
- Site: Fenway Park
- City: Boston, MA
- Network/Streaming: MLB.TV, NBC Sports Bay Area, NESN
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The Latest Odds: Giants vs. Red Sox
The latest odds as of Friday courtesy of DraftKings:
- Moneyline: San Francisco Giants (+163), Boston Red Sox (-176)
- Spread: Giants +1.5 (-142), Red Sox -1.5 (+118)
- Total: 7.5 runs
Probable Starting Pitchers – Giants vs. Red Sox for August 21
- Red Sox: Sonny Gray
Season Totals: 132.2 IP, 15-3, 2.65 ERA, 1.15 WHIP, 117K, 34 BB - Giants: Logan Webb
Season Totals: 139.0 IP, 8-7, 3.50 ERA, 1.06 WHIP, 110K, 32 BB
Who’s Hot? Who’s Not! Giants vs. Red Sox
- Jarren Duran is 4-6 in his career against Logan Webb
- Logan Webb has struck out 4+ hitters in 5 of his last 6 starts
- Rafael Devers is 6-21 including 2 HRs in his career against Sonny Gray
- Willy Adames is 6-19 including 1 HR against Gray
- Sonny Gray has struck out 5+ hitters in 4 of his last 6 starts
- Willson Contreras is 6-13 over his last 3GP
- Adley Rutschman was 4-10 in the series against the Diamondbacks
- Christian Koss did not pick up a hit in the last 2 games against Cleveland after hitting safely at least once in the previous 8GP
- Rafael Devers has hit safely in 5 of his last 6 games (6-25)
Top Betting Trends & Insights: Giants vs. Red Sox
- The Giants are 63-64 on the Run Line this season
- The Red Sox are 62-65 on the Run Line this season
- The OVER has cashed 58 times in San Francisco’s 127 games this season (58-58-11)
- The OVER has cashed 59 times in Boston’s 127 games this season (59-64-4)
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Expert picks & predictions: Giants vs. Red Sox for August 21
Rotoworld Bet Best Bet
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Our model calculates projections around each moneyline, spread and over/under bet for every game on the MLB calendar based on data points like past performance, player matchups, ballpark information and weather forecasts.
Once the model is finished running, we put its projection next to the latest betting lines for the game to arrive at a relative confidence level for each wager.
Here are the best bets our model is projecting for tonight’s game between the Giants and the Red Sox:
- Moneyline: Rotoworld Bet is staying away from a play on the Moneyline.
- Spread: Rotoworld Bet is recommending a play on the Red Sox on the Run Line.
- Total: Rotoworld Bet is leaning towards a play on the Game Total OVER 7.5
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