Rankings and Game Forecast: Red Sox vs Rays Analysis – Sunday September 21, 2025

Boston Red Sox logo

Boston Red Sox

@
Tampa Bay Rays logo

Tampa Bay Rays

-130O/U: 7.5
(-105/-115)
+110

The Tampa Bay Rays are set to host the Boston Red Sox on September 21, 2025, in what promises to be an intense matchup in the American League East. The Rays, who currently sit at 75-80, are battling through a disappointing season, while the Red Sox boast an impressive 85-70 record and have been performing well above average. In their last encounter, the Rays fell to the Red Sox by a score of 6-3, marking a tough loss as they continue to search for consistency.

On the mound, Tampa Bay will send out Joe Boyle, who has had a mixed season with a 1-3 record and a 4.64 ERA. Notably, Boyle pitched well in his last outing, going 6 innings without allowing any earned runs. However, his overall performance this season has been below average, ranking him 136th among starting pitchers in MLB. He projects to pitch only 4.6 innings today, which further adds to concerns regarding his effectiveness.

In contrast, Boston will counter with Connelly Early, a promising left-handed pitcher who has been exceptional early in his career, sporting a 0.87 ERA across 2 starts. While he has shown signs of good form, the projections suggest he may face challenges today, especially against a Rays offense that ranks 15th overall but has the 4th least walks in the league.

Given the Rays’ strong bullpen, ranked 2nd overall, they could leverage this advantage in closely contested matchups. However, both teams are navigating different trajectories, with the Red Sox appearing better positioned for today’s contest. As the game total is set at a low 7.5 runs, bettors should expect a tightly-fought battle where every run counts.

Boston Red Sox Insights

  • Boston Red Sox – 1st Five Innings (F5) Moneyline (-140)
    In his previous GS, Connelly Early was in good form and allowed 0 ER.
    Explain: A pitcher who was strong in his last outing may be sharp once again in his next outing.
  • Nate Lowe – Over/Under 0.5 Hits (-135/+105)
    Nathaniel Lowe is projected to bat 6th in the batting order in this game, which would be a downgrade from his 92% rate of hitting in the top-half of the lineup this year.
    Explain: The lower in the order a player bats, the fewer plate appearances he will get and the fewer opportunities he will get to hit the Over for every market. A player who hits lower in the order than he normally does may provide extra value opportunity since the market may be based on him hitting higher.
  • It may be wise to expect worse results for the Boston Red Sox offense in future games, considering that the leading projection system (THE BAT X) sees them as the 6th-luckiest offense in MLB this year.
    Explain: When teams overperform their projected talent level, markets may overvalue them even while they are likely to perform worse in the near future.

Tampa Bay Rays Insights

  • Joe Boyle – Over/Under 14.5 Pitching Outs (-180/+140)
    Joe Boyle has been given a shorter leash than the average pitcher this year, throwing 9.7 fewer adjusted pitches-per-game than league average.
    Explain: Pitchers with a shorter leash are more likely to get pulled earlier in games and record fewer outs.
  • Yandy Diaz – Over/Under 1.5 Total Bases (+100/-130)
    Yandy Diaz has seen a substantial improvement in his exit velocity lately; just compare his 99.4-mph average in the last week’s worth of games to his seasonal 93-mph mark.
    Explain: Hitting the ball hard increases the chances of either a home run or the ball landing in fair territory for a hit before a fielder can get to it.
  • Tampa Bay Rays – 2H Moneyline
    The Tampa Bay Rays bullpen ranks as the 2nd-best in the game, according to the leading projection system (THE BAT).
    Explain: Most bettors only consider the starting pitcher, but a strong bullpen sneakily creates a tougher matchup for the opposing offense and suppresses a game’s runs.

Betting Trends

  • Tampa Bay Rays – Over/Under 3.5 Team Total (-105/-125)
    The Tampa Bay Rays have hit the Team Total Under in 86 of their last 154 games (+8.30 Units / 5% ROI)
  • Boston Red Sox – Moneyline (-130)
    The Boston Red Sox have hit the Moneyline in 43 of their last 69 games (+12.00 Units / 12% ROI)
  • Wilyer Abreu – Over/Under 0.5 Runs (+130/-170)
    Wilyer Abreu has hit the Runs Under in 19 of his last 25 away games (+8.85 Units / 21% ROI)