Mariners vs Rangers Prediction, Odds, Moneyline, Spread & Over/Under for July 31

Odds updated as of 9:13 p.m.

The Seattle Mariners versus the Texas Rangers is on the MLB schedule for Thursday.

Before you do any MLB betting on this matchup at FanDuel Sportsbook, here's what you need to know.

Mariners vs Rangers Game Info

• Seattle Mariners (57-52) vs. Texas Rangers (57-52)
• Date: Thursday, July 31, 2025
• Time: 9:40 p.m. ET
• Venue: T-Mobile Park -- Seattle, Washington
• Coverage: ROOT Sports NW and RSN

Mariners vs Rangers Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: SEA: (-166) | TEX: (+140)
• Spread: SEA: -1.5 (+126) | TEX: +1.5 (-152)
• Total: 7.5 -- Over: (-106) | Under: (-114)

Mariners vs Rangers Probable Starting Pitchers

Probable Pitchers: George Kirby (Mariners) - 5-5, 4.50 ERA vs Kumar Rocker (Rangers) - 4-4, 5.73 ERA

This contest's pitching matchup is set, as the Mariners will send George Kirby (5-5) to the mound, while Kumar Rocker (4-4) will get the nod for the Rangers. Kirby's team is 4-7-0 against the spread this season in his starts. When Kirby starts a game and his team is the favorite on the moneyline, they have a record of 5-4. The Rangers have gone 6-7-0 ATS in Rocker's 13 starts that had a set spread. The Rangers have been the underdog on the moneyline in seven of Rocker's starts this season, and they went 4-3 in those matchups.

Mariners vs Rangers Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Mariners win (60.9%)

Mariners vs Rangers Moneyline

• Seattle is the favorite, -166 on the moneyline, while Texas is a +140 underdog on the road.

Mariners vs Rangers Spread

• The Rangers are +1.5 on the run line against the Mariners. The Rangers are -152 to cover, and the Mariners are +126.

Mariners vs Rangers Over/Under

• The Mariners-Rangers game on July 31 has been given an over/under of 7.5 runs. The over is set at -106 and the under at -114.

Bet on Seattle Mariners vs. Texas Rangers on FanDuel today!

Mariners vs Rangers Betting Trends

• The Mariners have been chosen as favorites in 71 games this year and have walked away with the win 38 times (53.5%) in those games.
• These are the best odds of a victory sportsbooks have given Seattle this season, with a -166 moneyline set for this game.
• The Mariners and their opponents have gone over the total this season in 55 of their 106 opportunities.
• The Mariners have an against the spread mark of 45-61-0 in 106 games with a line this season.
• The Rangers have gone 19-34 in games they were the underdog on the moneyline (winning 35.8% of those games).
• Texas has not yet played as a moneyline underdog of +140 or longer.
• The Rangers have had an over/under set by bookmakers 108 times, and have combined with opponents to go over the total in 45 of those games (45-61-2).
• The Rangers have covered 54.6% of their games this season, going 59-49-0 ATS.

Mariners Player Leaders

• Cal Raleigh leads Seattle with 102 hits and an OBP of .365 this season. He has a .257 batting average and a slugging percentage of .607.
• Among all qualifying batters in baseball, his batting average ranks 79th, his on-base percentage ranks 21st, and he is second in slugging.
• Eugenio Suarez is batting .248 with 19 doubles, 36 home runs and 29 walks, while slugging .576 with an on-base percentage of .320.
• He ranks 100th in batting average, 97th in on-base percentage and fourth in slugging among qualified batters.
• Suarez enters this game looking to extend his two-game hit streak. In his last five games he is batting .167 with a double and an RBI.
• Josh Naylor has 107 hits this season and has a slash line of .288/.356/.442.
• Julio Rodriguez has an OPS of .748, fueled by an OBP of .312 and a team-best slugging percentage of .436 this season.
• Rodriguez has hit safely in two games in a row. During his last five outings he is hitting .238 with a double, two home runs and two RBIs.

Rangers Player Leaders

• Marcus Semien has 12 doubles, a triple, 13 home runs and 45 walks while batting .231. He's slugging .364 with an on-base percentage of .311.
• Including all qualified hitters in the big leagues, his batting average places him 134th, his on-base percentage ranks 114th, and he is 135th in slugging.
• Semien hopes to build on a three-game hitting streak in this matchup. In his last five games he is batting .318 with a double, two walks and two RBIs.
• Josh Smith's .355 on-base percentage and .418 slugging percentage are both team-highs. He has a batting average of .276.
• Including all qualifying hitters, he ranks 40th in batting average, 37th in on-base percentage and 85th in slugging percentage.
• Corey Seager is hitting .269 with 15 doubles, 15 home runs and 45 walks.
• Adolis Garcia has 20 doubles, 15 home runs and 23 walks while batting .227.

Mariners vs Rangers Head to Head

• 6/29/2025: 6-4 SEA (Favorite: Mariners, Spread: -1.5, Total: 8.5, Favorite Moneyline: -122, Underdog Moneyline: +104)
• 6/28/2025: 3-2 TEX (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -122, Underdog Moneyline: +104)
• 6/27/2025: 7-6 SEA (Favorite: Mariners, Spread: -1.5, Total: 7, Favorite Moneyline: -116, Underdog Moneyline: -102)
• 5/4/2025: 8-1 TEX (Favorite: Rangers, Spread: -1.5, Total: 8.5, Favorite Moneyline: -180, Underdog Moneyline: +152)
• 5/3/2025: 2-1 SEA (Favorite: Mariners, Spread: -1.5, Total: 9, Favorite Moneyline: -130, Underdog Moneyline: +110)
• 5/2/2025: 13-1 SEA (Favorite: Mariners, Spread: -1.5, Total: 8.5, Favorite Moneyline: -134, Underdog Moneyline: +114)
• 4/13/2025: 3-1 SEA (Favorite: Mariners, Spread: -1.5, Total: 6.5, Favorite Moneyline: -144, Underdog Moneyline: +122)
• 4/12/2025: 9-2 SEA (Favorite: Mariners, Spread: -1.5, Total: 7, Favorite Moneyline: -144, Underdog Moneyline: +122)
• 4/11/2025: 5-3 SEA (Favorite: Rangers, Spread: -1.5, Total: 6.5, Favorite Moneyline: -124, Underdog Moneyline: +106)
• 9/22/2024: 6-5 TEX (Favorite: Mariners, Spread: -1.5, Total: 7.5, Favorite Moneyline: -142, Underdog Moneyline: +120)

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