Guardians vs. Red Sox Prediction, MLB Picks for Tuesday, September 22

September 22, 2026

MLB
AP Photo/Joseph Scheller
Guardians OF Steven Kwan rounds third base following a home run vs. the Twins.

Guardians vs. Red Sox is set for first pitch at 6:45 p.m. ET on Tuesday, September 22, with the Red Sox having a 1.72x payout if they win, via PrizePicks.

The Guardians will try to hold on to their slim AL Central lead with SP Parker Messick (12-9, 2.57 ERA) on the mound. The Red Sox, who have already locked up a playoff spot, will counter with SP Payton Tolle (9-6, 3.02 ERA).

Below, we’ll break down our Guardians vs. Red Sox prediction and picks for Tuesday’s MLB game, including game winner, over/under, and key player picks for PrizePicks.

Make your Guardians vs. Red Sox picks on PrizePicks now.

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Guardians vs. Red Sox Prediction, Winner Payout, Over/Under – Tuesday, September 22

The Guardians have won five games in a row to overtake the White Sox in the AL Central. Their pitching staff played a major role, allowing 3 or fewer runs in three of the last four games. Pitching has been a clear stretch strength, with a 3.90 xERA (seventh) and 1.26 WHIP (eighth), per FanGraphs.

The Red Sox have seen their lineup struggle as the playoffs approach. Over their last 15 games, they scored 4 or fewer runs 12 times. They are 20th in runs scored this season, despite being tied for 10th in wOBA (.318). Power is a problem, as they are tied for the sixth-fewest home runs.


Guardians vs. Red Sox Winner Payout, Over/Under – Tuesday, September 22

The Red Sox enter Tuesday’s game as a home favorite against the Guardians returning a 1.72x payout if they win outright, via PrizePicks.

Here are the full payouts for the Guardians vs. Red Sox game on PrizePicks — where you can make real money predictions on every MLB game!

Win Spread Over/Under
CLE Guardians 2x +1.5 | 1.44x o6.5 | 1.78x
BOS Red Sox 1.72x -1.5 | 2.63x u6.5 | 1.96x
Make your Guardians vs. Red Sox prediction on the over/under on PrizePicks.

PrizePicks data is live as of writing and is subject to change.


Guardians vs. Red Sox Prediction on Over/Under – Tuesday, September 22

Here are the key game stats and trends behind our Guardians vs. Red Sox prediction on the over/under for Tuesday, September 22.

  • The Guardians are 81-75 despite their modest +2 run differential.
  • Cleveland has underwhelmed at the plate, ranking 26th in runs scored, 27th in home runs, and 27th in wOBA (.307).
  • Tolle has been excellent for the Red Sox, recording a 3.02 ERA that is supported by an even more impressive 2.65 xERA. He has limited hitters to a 34.7% hard-hit rate on his way to a 1.07 WHIP.
  • The Guardians already have problems hitting home runs and facing Tolle likely won’t help matters. He allows just 0.9 HR/9.
  • Messick has been just as good as Tolle, posting a 2.57 ERA and a 3.10 xERA. He has not allowed more than 3 runs in a start since June 29.
  • These two teams also have excellent bullpens. The Red Sox's unit has a 3.09 ERA and a 1.18 WHIP, and the Guardians' bullpen has been nearly as good with a 3.55 ERA and 1.25 WHIP.
Lock in your Guardians vs. Red Sox prediction on PrizePicks before the first pitch.

Guardians vs. Red Sox Picks, Player Stats for PrizePicks: 9/22/26

Here are top Guardians vs. Red Sox picks to target on PrizePicks for Tuesday, September 22. Today's MLB picks for PrizePicks include OF Steven Kwan and C Adley Rutschman.

Stack your MLB lineup on PrizePicks today and win real money if you’re right!

Guardians OF Steven Kwan vs. Red Sox: 1.5 Hits+Runs+RBIs

  • With Kwan only hitting 3 home runs for the season, he has just 31 RBIs despite playing 146 games.
  • The veteran outfielder is not hitting the ball hard, posting a 0.4% barrel rate and a 10.0% hard-hit rate for the season. For his career, he has a 1.4% barrel rate and an 18.5% hard-hit rate.
  • Left-handed pitchers have held Kwan to a .288 wOBA, compared to a .350 wOBA against righties.
  • Tolle has a robust 32.4% strikeout rate at home, ahead of a 25.1% strikeout rate on the road.
Add Steven Kwan to your PrizePicks lineup now!

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Red Sox C Adley Rutschman vs. Guardians: 5.5 Hitter Fantasy Score

  • Since being acquired from the Orioles, Rutschman is only 19 for 107 (.192) with a .364 slugging percentage over 27 games.
  • The 28-year-old has a .316 wOBA, putting him on pace to finish with a wOBA below .320 for the third straight season.
  • Left-handed pitchers have limited Rutschman to a .264 wOBA and a .111 ISO this year — which sits behind his .342 wOBA and .214 ISO vs. righties.
  • Messick has been lights out on the road, limiting teams to a 0.91 WHIP. He has allowed 2 or fewer earned runs in each of his last eight outings away from Cleveland.
Add Adley Rutschman to your PrizePicks lineup now!

Make Guardians vs. Red Sox Picks on PrizePicks

Tuesday’s matchup between the Guardians and Red Sox could be a low-scoring battle with Messick squaring off against Tolle. With strong pitching on the mound, Rutschman and Kwan might have quiet nights at the plate.

Don’t wait until the first pitch — make your Guardians vs. Red Sox picks on PrizePicks now and earn real money if you’re right.

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Mike Barner has been covering fantasy sports since 2007. He specializes in the NBA, NFL, and MLB. He is a two-time finalist for the Fantasy Sports Writers Association Basketball Writer of the Year award and won the 2021-22 FSGA NBA Experts Champions league. In addition to PrizePicks, Mike has written for Sports Illustrated, RotoWire, SportsLine, and more.