- Matchup: Arizona Diamondbacks vs Boston Red Sox
- Date: Tuesday, August 18, 2026
- Venue: Fenway Park, Boston, MA
- Broadcast: NESN
- Betting Odds: Arizona (+150) Boston (-182)
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On Tuesday, Fenway Park will host a showdown between the Boston Red Sox (66-58) and the Arizona Diamondbacks (66-59). The moneyline favors Arizona at +150, while Boston is positioned at -182. The over/under for this matchup is set at 8.5 runs, with Merrill Kelly and Ranger Suarez scheduled to pitch.
The Arizona Diamondbacks boast a slugging percentage of .399 and have struck out 912 times, with 419 walks recorded this season. They have tallied 539 RBIs and accumulated 1,023 hits, resulting in a batting average of .244. As a team, the Diamondbacks have hit 214 doubles and launched 124 home runs, scoring a total of 567 runs, and maintain an on-base percentage of .316. Averaging 4.5 runs per game places them 12th in the league.
With a K/BB ratio of 2.35, the Diamondbacks’ pitching staff holds a collective WHIP of 1.27. They have allowed 142 home runs and a total of 549 runs (ranked 15th in baseball). Arizona has conceded 1,053 hits (an average of 8.5 per 9 innings) and 504 earned runs, maintaining a team ERA of 4.09 (14th in the league) while striking out 852 batters. Their pitching staff has issued 362 walks, leading to a team FIP of 4.31.
This season, Diamondbacks pitchers have faced runners on base 107 times and have appeared in 133 high-pressure situations. The bullpen has recorded 71 holds (ranked 10th) and has a save percentage of 67.4% from 118 save opportunities, converting 31 of 46 chances. 159 base runners have been inherited, with 25.2% scoring. The Diamondbacks’ pitching staff has utilized 410 relievers throughout the season.
So far this season, the Arizona Diamondbacks have amassed 3,330 putouts, 1,092 assists, and 45 errors. Their fielding percentage stands at .990, ranking 1st in Major League Baseball, with 113 double plays recorded. The Diamondbacks convert 71.3% of balls in play into outs over 9,990 defensive innings, placing them 7th in MLB.
Merrill Kelly has pitched 1,133 innings in his career, striking out 993 batters. His career ERA is 3.92 (allowing 493 earned runs), with a WHIP of 1.228. He has ceded 1,039 hits (8.3 hits per nine innings) and recorded 353 walks. Kelly holds a career record of 73-63, with a FIP of 3.86, having faced 4,685 batters in the majors.
The Boston Red Sox have recorded a team on-base percentage of .320 and a batting average of .248 this season. They have struck out 1,021 times (ranked 18th) and secured 1,026 hits, resulting in 124 home runs and 525 RBIs. The team’s slugging percentage is .400, averaging 4.43 runs per game (17th in the league). They’ve achieved 224 doubles, while drawing 393 walks and scoring 549 runs.
Bostons’ pitchers collectively maintain a WHIP of 1.222 and a FIP of 3.64 for the season, ranking 12th in MLB for total hits allowed (997). The pitching staff has permitted 468 runs with a 3.52 ERA (431 earned runs), showcasing a K/BB ratio of 8.70 (1,059 strikeouts to 348 walks). They have allowed 119 home runs, yielding 3.83 runs per 9 innings (3rd in MLB).
Currently, they are third in the league with a 75.6% save percentage while utilizing 379 relievers throughout the season. The bullpen has entered 108 times in high-leverage situations and has faced runners on base 95 times. In 123 save situations, the Red Sox have tallied 76 holds and recorded 11 blown saves. With 45 save opportunities, Boston has converted 34 saves, while their relief pitchers have inherited runners scoring at a rate of 32.3% from 130 inherited runners.
The Boston Red Sox have achieved 90 double plays and maintain a .986 fielding percentage (15th in MLB). They have accumulated 1,075 assists, 61 errors, and 3,304 putouts this season. Over 9,912 innings, their defensive efficiency is 69.7% (17th in pro baseball).
In his professional baseball career, Ranger Suarez has surrendered 825 hits and amassed 815 strikeouts over 870 innings. He has allowed 325 earned runs with a WHIP of 1.260 and FIP of 3.3. His strikeout-to-walk ratio stands at 3.01, facing 3,642 batters with a career record of 57-40 and a 3.36 ERA, allowing 8.5 hits per nine innings.
Who will come out on top in tonight’s MLB matchup against the spread or moneyline?
Selection: Take Arizona (+150)
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