Matchup: Tampa Bay Rays vs Seattle Mariners
Date: Friday, August 8, 2025
Venue: T-Mobile Park, Seattle, WA
Broadcast: Root Sports Northwest
Betting Odds: Tampa Bay (+132) Seattle (-160)
This Friday, T-Mobile Park will host an exciting matchup as the Seattle Mariners (62-53) take on the Tampa Bay Rays (57-59). With Tampa Bay at +132 and Seattle favored at -160, the over/under is set at 9 runs. Drew Rasmussen and Luis Castillo are the starting pitchers for this encounter.
The Tampa Bay Rays have a slugging percentage of .399 and have recorded 982 strikeouts, along with 344 walks. This season, they’ve amassed 492 RBIs and 985 hits, with a batting average of .252. The Rays have hit 173 doubles and launched 126 home runs, resulting in a total of 522 runs scored, alongside an on-base percentage of .315. On average, Tampa Bay scores 4.5 runs per game, placing them 12th in Major League Baseball.
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The Rays’ pitching staff holds a team ERA of 3.86, ranking them 13th in the league, with 980 batters struck out this season. The pitching unit has allowed 147 home runs and 475 runs overall (12th in the league), with a total of 330 walks and a FIP of 4.16. Tampa Bay pitchers have yielded 917 hits, averaging 8.0 hits per 9 innings, with 441 earned runs allowed. Their K/BB ratio stands at 2.97 and team WHIP at 1.21.
This season, the Rays’ bullpen has entered games with runners on base 83 times, totaling 112 high-leverage situations. With 65 holds this year (15th in the league), their save success rate is 55.6%, having converted 25 out of 45 save opportunities. The bullpen has inherited 121 base runners, with 35.5% crossing home plate, totaling 364 relief appearances this season.
With a defensive efficiency of 70.9%, the Rays rank 8th in MLB, converting 9,258 innings into 3,086 putouts, 1,032 assists, and 54 errors. Their fielding percentage is .987, placing them 10th in the league, with 111 double plays recorded.
Drew Rasmussen holds a career record of 29-17 and a FIP of 2.88, having faced 1,666 batters. He’s allowed 339 hits (7.3 hits per 9 innings) and has issued 107 walks, with an ERA of 2.92 (135 earned runs allowed) and a career WHIP of 1.074. Over the span of 415 innings, Rasmussen has struck out 394 batters.
The Seattle Mariners boast a team on-base percentage of .320 and a batting average of .244. They’ve struck out 1,022 times (ranking 4th), with 958 hits recorded. This season, the Mariners have also tallied 164 home runs and 506 RBIs, with a team slugging percentage of .412, averaging 4.58 runs per game (10th in baseball). They’ve achieved 154 doubles and 390 walks, contributing to 527 total runs scored.
Seattle’s pitching staff has a WHIP of 1.242 and a FIP of 4.05, with a K/BB ratio of 8.40 (977 strikeouts to 348 walks). They rank 20th in total hits allowed with 946, having surrendered 133 home runs and permitting 4.30 runs per 9 innings (16th in the league). The Mariners’ pitching staff has allowed 498 runs with a season ERA of 3.85 (446 earned runs).
With 47 save opportunities, Seattle’s bullpen has secured 28 saves and currently ranks 20th in this category, boasting a save percentage of 59.6%. The bullpen has seen 383 pitchers take the mound this season, with a total of 160 high-leverage situations. They’ve also inherited runs in 103 cases, with a score rate of 25.2%. This season, the Mariners have tallied 61 holds and experienced 19 blown saves over 108 save opportunities.
Defensively, the Mariners have turned 87 double plays and hold an impressive fielding percentage of .989 (4th in baseball). Accumulating 972 assists, 46 errors, and 3,128 putouts, Seattle has a defensive efficiency of 70.7% over 9,384 innings played (10th in the majors).
Throughout his career, Luis Castillo has given up 1,162 hits and secured 1,446 strikeouts in 1,361 innings. With 533 earned runs allowed, he maintains a WHIP of 1.180 and a FIP of 3.5. Castillo exhibits a K/BB ratio of 3.26, and has faced 5,627 batters in his professional career, sporting a win-loss record of 81-82 and an ERA of 3.52, permitting 7.7 hits per nine innings.
Who will take home the victory in this MLB showdown against the spread or on the moneyline?
Tony Sink’s Prediction: Bet on Tampa Bay (+132)
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