Mariners vs Reds Prediction, Odds, Moneyline, Spread & Over/Under for July 20

Odds updated as of 9:11 p.m.

The MLB schedule on Monday includes the Seattle Mariners facing the Cincinnati Reds.

Before checking out the MLB betting lines on FanDuel Sportsbook, we've got you covered, in terms of the most important info about this game.

Mariners vs Reds Game Info

• Seattle Mariners (50-50) vs. Cincinnati Reds (45-53)
• Date: Monday, July 20, 2026
• Time: 9:40 p.m. ET
• Venue: T-Mobile Park -- Seattle, Washington
• Coverage: Mariners.TV and Reds.TV

Mariners vs Reds Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: SEA: (-146) | CIN: (+124)
• Spread: SEA: -1.5 (+152) | CIN: +1.5 (-184)
• Total: 7.5 -- Over: (-115) | Under: (-105)

Mariners vs Reds Probable Starting Pitchers

Probable Pitchers: George Kirby (Mariners) - 7-8, 3.76 ERA vs Andrew Abbott (Reds) - 5-5, 4.11 ERA

The Mariners will give the ball to George Kirby (7-8, 3.76 ERA), who is eyeing win No. 8 on the season, and the Reds will counter with Andrew Abbott (5-5, 4.11 ERA). Kirby and his team have a record of 6-12-0 against the spread when he starts. When Kirby starts a game and his team is the favorite on the moneyline, they have a record of 9-9. The Reds have gone 10-10-0 ATS in Abbott's 20 starts that had a set spread. The Reds are 7-9 in Abbott's 16 starts this season that they were the moneyline underdog.

Mariners vs Reds Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Mariners win (67.2%)

Mariners vs Reds Moneyline

• Cincinnati is a +124 underdog on the moneyline, while Seattle is a -146 favorite at home.

Mariners vs Reds Spread

• The Mariners are hosting the Reds and are favored by 1.5 runs (+152 to cover) on the runline. Cincinnati is -184 to cover.

Mariners vs Reds Over/Under

• The over/under for Mariners-Reds on July 20 is 7.5. The over is -115, and the under is -105.

Bet on Seattle Mariners vs. Cincinnati Reds on FanDuel today!

Mariners vs Reds Betting Trends

• The Mariners have won in 45, or 53.6%, of the 84 contests they have been named as odds-on favorites in this year.
• Seattle has a record of 20-12 in contests when bookmakers favor them by -146 or more on the moneyline.
• The Mariners' games have gone over the total in 47 of their 99 opportunities.
• The Mariners have posted a record of 36-63-0 against the spread this season.
• The Reds have been the underdog on the moneyline 64 total times this season. They've gone 29-35 in those games.
• Cincinnati is 6-15 (winning just 28.6% of its games) when it has played as a moneyline underdog of +124 or longer.
• The Reds have had an over/under set by oddsmakers 96 times, and have combined with opponents to go over the total in 54 of those games (54-41-1).
• The Reds have a 52-44-0 record ATS this season (covering 54.2% of the time).

Mariners Player Leaders

• Randy Arozarena leads Seattle with 94 hits and an OBP of .376, plus a team-best slugging percentage of .448. He's batting .281.
• Among all qualifying hitters in MLB, he is 29th in batting average, 17th in on-base percentage, and 60th in slugging.
• Josh Naylor has 12 doubles, eight home runs and 31 walks. He's batting .253 and slugging .353 with an on-base percentage of .318.
• His batting average ranks 78th among qualified players, his on-base percentage 95th, and his slugging percentage 131st.
• Cole Young is batting .256 with a .409 slugging percentage and 48 RBI this year.
• Young brings a two-game hitting streak into this matchup. During his last five outings he is batting .316 with a double, two home runs and five RBIs.
• Julio Rodriguez has 14 home runs, 41 RBI and a batting average of .256 this season.

Reds Player Leaders

• Sal Stewart has racked up a slugging percentage of .475, a team-high for the Reds. He's batting .253 with an on-base percentage of .334.
• Including all the qualifying hitters in the big leagues, his batting average ranks 78th, his on-base percentage ranks 72nd, and he is 38th in slugging.
• Elly De La Cruz's 89 hits and .353 on-base percentage are both team-highs. He has a batting average of .282 while slugging .506.
• His batting average ranks 25th among all qualified players, his on-base percentage is 41st, and he is 18th in slugging.
• Spencer Steer is hitting .246 with 14 doubles, 16 home runs and 34 walks.
• JJ Bleday is batting .243 with 11 doubles, a triple, 16 home runs and 41 walks.

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