Seattle Mariners vs Tampa Bay Rays Prediction, 9/3/2025 MLB Picks, Best Bets & Odds

Game: Seattle Mariners vs Tampa Bay Rays

Date: Wednesday, September 3, 2025

Location: George M. Steinbrenner Field in Tampa, FL

TV: FanDuel Sports Network Sun

Odds/Point Spread: Seattle (-210) Tampa Bay (+172)

The Tampa Bay Rays (68-69) will go up against the Seattle Mariners (73-65) at George M. Steinbrenner Field on Wednesday. The odds on this game have Seattle at -210 and Tampa Bay is coming in at +172. The total comes in at 8. The pitchers taking the mound will be George Kirby and Adrian Houser.

The Mariners have tallied 188 doubles as a squad and have hit 196 baseballs out of the park. Seattle has a slugging rate of .411 and have been called out on strikes 1,231 times, while being walked on 461 occasions. As a team, the Seattle Mariners are scoring 4.6 runs per contest, which ranks them 12th in baseball. They have recorded 604 runs batted in and 1,134 base knocks on the year, and their team batting average is sitting at .242. They have tallied 629 runs scored and have an OBP of .318.

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Their strikeout to walk ratio sits at 2.87 and the pitching staff has earned a collective WHIP of 1.25. Mariners pitchers have surrendered 168 home runs in addition to 612 total runs (18th in baseball). Seattle has given up 1,150 hits (8.3 per 9 innings) as well as 552 earned runs. The Mariners have an earned run average of 3.99 over the course of the season (17th in MLB), and their staff has rung up 1,178 batters. They have walked 410 players from the other team and their FIP comes in at 4.13 as a unit this season.

The Mariners bullpen have recorded a save percentage of 62.1% and have entered the game in 135 save situations. The relief pitchers have inherited 123 runners this year with 25.2% of those players earned a run for their team. Mariners bullpen pitchers have entered the contest with runners on 112 times in addition to having 186 appearances in high leverage situations. The Mariners have dispatched 462 relief pitchers to the hill over the course of the season. The relievers have tallied 77 holds on the season (15th in baseball). They have compiled 36 saves on the campaign and have not converted 22 of their 58 save chances.

The Mariners have converted 70.3% of balls in play into outs out of their 11,193 innings, ranking them 11th in the majors. The San Francisco Giants have notched a total of 3,731 putouts over the course of the season, as well as 1,160 assists and 59 errors. Their fielding percentage is holding steady at .988 which has them ranked 6th in pro baseball, and have accumulated 100 double plays.

Kirby has taken the mound for 613 innings and has 587 punch outs during his MLB career. His ERA is 3.52 (240 earned runs allowed) and his WHIP is 1.105. He has conceded 588 hits (8.6 hits per nine innings) and has had 90 free passes. Kirby (43-32 career win-loss mark) sits with a FIP of 3.47 and he has faced 2,500 opposing hitters in the majors.

The Rays have a SLG% of .403 and they are scoring 4.53 runs per contest (13th in baseball). They have notched 208 doubles, while getting a free base 393 times and scoring 621 runs. Tampa Bay has hit 156 home runs this year and 589 runs batted in. They have struck out on 1,174 occasions (13th in MLB) and are sitting with 1,161 base hits. The Tampa Bay Rays have accounted for a team on-base percentage of .313 in addition to a team batting average of .251 so far this season.

The Tampa Bay pitching staff have given up 566 runs so far this year while holding an ERA of 3.88 (523 earned runs relinquished). They have allowed 178 home runs and they allow 4.20 runs per 9 innings (10th in baseball). The Rays are sitting with a team WHIP of 1.213 in addition to having a FIP of 4.18 as a unit over the course of the season. They currently have a K/BB ratio of 8.80 (1,189 strikeouts vs 391 bases on balls). They rank 6th in MLB as a staff in total hits surrendered with 1,080.

Tampa Bay relief pitchers hold an inherited score percentage of 32.1% out of 137 inherited base runners. Their relief pitchers have taken the field 127 times in high leverage situations and also on 94 occasions with runners on. With 132 save situations, the Rays have accrued 78 holds and 22 blown saves. They rank 25th in MLB with a save rate of 58.5%, and they have dispatched 430 relievers to the hill this season. Tampa Bay has called on relievers to step onto the hill in 53 save chances and they have tallied 31 saves.

In their 10,920 innings played, the Rays are sitting with a efficiency on defense of 70.7% (7th in baseball). The Tampa Bay Rays have turned 127 double plays and have a fielding percentage of .987 (10th in professional baseball). The Rays have recorded 1,209 assists, 64 errors and have notched a total of 3,640 putouts this season.

Houser (39-43 career mark) has earned a 4.04 ERA while allowing 8.8 hits per 9 innings. He has a K/BB ratio of 2.00 and he has gone up against 3,014 batters so far in his MLB career. He has allowed a total of 315 ER's while earning a WHIP of 1.372 and a FIP of 4.0. During his career, Houser has given up 689 hits while tallying 550 strikeouts in 702 innings.

Who will win tonight's MLB game against the spread or moneyline?

Josh Schonwald's Pick: Take Seattle (-210)

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